At least several thousand years ago
Ancient Mushroom Sacraments
Long before modern psychedelic science, Indigenous peoples in Mesoamerica used psychoactive mushrooms in healing and divination rites. The mushrooms were revered as a direct means of encountering powers beyond ordinary perception, not merely as intoxicants.
Spanish accounts later described worshippers singing, weeping, and seeing visions after eating them. This sacramental tradition would become a central, contested thread in the modern Western story of psychedelics.
After the Spanish conquest of Mesoamerica and into the seventeenth century
The Church Suppresses the Rites
Spanish authorities treated Indigenous mushroom ceremonies as a rival religious authority. Priests condemned the mushrooms as the devil’s flesh, while interrogations, torture, and the destruction of ritual objects drove the practice underground.
The suppression left a deep historical rupture: a living sacrament became secret, and later outsiders would struggle to distinguish its older religious role from the healing and divination practices they encountered.
1927
The Wassons Begin Their Inquiry
During a honeymoon walk in the Catskills, Valentina Wasson knelt before wild mushrooms with reverence, while her new husband, [R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612), recoiled from them as dangerous and repulsive. Their sharply different responses became the seed of a decades-long investigation into why some cultures feared mushrooms and others cherished them.
The couple developed the concepts of mycophobia and mycophilia and wondered whether an ancient divine mushroom might help explain humanity’s religious impulse. That theory shaped the questions R. Gordon Wasson would carry into the field.
1938
Hofmann Synthesizes LSD
At [Sandoz](entity:organization-recall-organization-sandoz-163fd0380c25), chemist [Albert Hofmann](entity:character-recall-character-albert-hofmann-0f67006db3b1) synthesized [LSD](entity:object-recall-object-lsd-adda711233e2)-25 while investigating compounds derived from ergot. The new substance did not appear to have the circulatory effects he sought, so he set it aside.
Its dormant place in the laboratory would not last. The molecule’s later effects on consciousness helped launch a new era in psychiatry and forced researchers to ask what kind of medicine, or threat, they had discovered.
April 1943
Hofmann’s First LSD Experience
After resynthesizing [LSD](entity:object-recall-object-lsd-adda711233e2), [Albert Hofmann](entity:character-recall-character-albert-hofmann-0f67006db3b1) accidentally absorbed a small amount and experienced the first LSD trip. He found himself swept into powerful visual and emotional changes, unable to tell whether he had encountered madness or something transcendent.
The experience persuaded him that the compound could matter to neurology and psychiatry. It also began the modern history of LSD as a deliberately investigated alteration of consciousness.
1949 to 1966
Sandoz Opens the Research Supply
[Sandoz](entity:organization-recall-organization-sandoz-163fd0380c25) made [Delysid](entity:object-recall-object-delysid-e5a10cf0f254) available to researchers and clinicians, often free of charge, hoping the new drug would reveal a useful medical application. The company interpreted “researcher” broadly, and scientists, therapists, and institutions across North America and Europe began trying [LSD](entity:object-recall-object-lsd-adda711233e2).
This open supply helped create the first wave of psychedelic research. It also spread the compound through a loosely connected community whose experiments would range from clinical treatment to spiritual exploration and, eventually, public controversy.
Late 1940s
Osmond Turns Toward Canada
After hospital authorities in England resisted his mescaline research, [Humphry Osmond](entity:character-recall-character-humphry-osmond-aed59e3b918a) sought a more welcoming place to investigate the mind and its chemistry. The reform-minded government of Saskatchewan offered funding and unusual freedom, drawing him to Weyburn.
At the [Saskatchewan Mental Hospital](entity:organization-recall-organization-527dead067da), Osmond joined [Abram Hoffer](entity:character-recall-character-abram-hoffer-5f66cd801d84) in work that would make the prairie institution a major center of psychedelic research. Their early focus was whether [LSD](entity:object-recall-object-lsd-adda711233e2) could illuminate psychosis and its possible chemical basis.
1951 to 1952
Hubbard’s Vision and LSD Conversion
[Al Hubbard](entity:character-recall-character-al-hubbard-96da91cfbc65), wealthy and restless despite his business success, later said an angel appeared to him while he was hiking and promised that something important was coming. A year later, he found a report about [LSD](entity:object-recall-object-lsd-adda711233e2), tracked down the researcher, and tried the drug.
Hubbard described visions of life’s beginnings and his own conception as the deepest mystical experience he had known. Convinced that LSD could change humanity, he took on what he saw as a chosen mission to introduce the drug to influential people.
1952
Schultes Redirects the Quest
A pharmaceutical-journal clipping sent by Robert Graves alerted [R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612) to a psychoactive mushroom reported in Mesoamerica. The lead came from [Richard Evans Schultes](entity:character-recall-character-richard-evans-schul-a6dcbc14881e), whose ethnobotanical research had identified sacred mushrooms and other psychoactive plants in the Americas.
Schultes redirected the Wassons from their earlier Asian search toward southern [Mexico](entity:location-recall-location-f1c6a91e03ea), where scattered reports suggested that Indigenous mushroom rites had survived. The clue brought the couple closer to the ceremony they had sought for years.
Early 1950s
Osmond and Hoffer Test LSD
At Weyburn, [Humphry Osmond](entity:character-recall-character-humphry-osmond-aed59e3b918a) and [Abram Hoffer](entity:character-recall-character-abram-hoffer-5f66cd801d84) administered [LSD](entity:object-recall-object-lsd-adda711233e2) to themselves, colleagues, and volunteers while exploring the psychotomimetic idea: that the drug temporarily reproduced aspects of psychosis. The model offered a way for clinicians to imagine entering a patient’s experience.
But the reports increasingly contained experiences unlike madness, including unity, heightened sensitivity, and philosophical or religious insight. The mismatch between theory and testimony began to unsettle the original framework.
Spring 1953
Huxley Takes Mescaline
[Humphry Osmond](entity:character-recall-character-humphry-osmond-aed59e3b918a) traveled to [Los Angeles](entity:location-recall-location-a4be76fb5f5a) to give [Aldous Huxley](entity:character-recall-character-aldous-huxley-5e4c482103e4) mescaline, worried that the writer might be driven mad. Instead, Huxley described a profound encounter with beauty and what he called the “[Mind at Large](entity:expression-recall-expression-mind-at-large-16db620fbbdd),” in which ordinary objects seemed charged with existence.
His published account, [The Doors of Perception](entity:expression-recall-expression-the-doors-of-perce-78906ec598a6), gave readers a compelling alternative to the idea that psychedelics merely mimicked psychosis. Huxley’s language and spiritual expectations would also shape how later generations imagined their own trips.
1953
The Alcoholism Hypothesis
During a late-night discussion, [Humphry Osmond](entity:character-recall-character-humphry-osmond-aed59e3b918a) and [Abram Hoffer](entity:character-recall-character-abram-hoffer-5f66cd801d84) noticed similarities between [LSD](entity:object-recall-object-lsd-adda711233e2) experiences and delirium tremens, the frightening withdrawal state some alcoholics remembered as a turning point in sobriety. They wondered whether a carefully guided LSD session might provoke a conversion experience that helped a person stop drinking.
The hypothesis led to years of treatment and a new emphasis on the experience itself, rather than the chemical alone. It also became an early example of psychedelic therapy’s promise and its dependence on context and guidance.
1953 to 1955
Wasson Finds the Mushroom Rites
[R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612) made repeated journeys to [Mexico](entity:location-recall-location-f1c6a91e03ea), seeking the mushroom ceremonies he had heard might persist in remote mountain villages. Locals often denied knowledge of the practice or directed him elsewhere, reflecting the secrecy imposed after the Spanish conquest.
Eventually, R. Gordon Wasson gained access to a ceremony in [Huautla de Jiménez](entity:location-recall-location-huautla-de-jim-nez-ea572e5ade94). He arrived with a theory about mushrooms and religion already in mind, a fact that would complicate how he interpreted what he witnessed.
Early to mid-1950s
Hubbard Shapes the Treatment Room
[Al Hubbard](entity:character-recall-character-al-hubbard-96da91cfbc65) recognized that a psychedelic session could be shaped by the room, the guide, and the participant’s expectations. He brought flowers, music, paintings, and meaningful objects into clinical spaces, making them feel less like sterile hospitals and more like settings prepared for an inward journey.
Hubbard’s practical understanding of set and setting helped lay the groundwork for high-dose psychedelic therapy. He used the suggestibility of the altered state as a resource, guiding people toward new perspectives or helping them through fear.
Night of June 29–30, 1955
The Huautla Ceremony
[R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612) and his photographer joined a velada led by [María Sabina](entity:character-recall-character-46cec6dbbe95), whom R. Gordon Wasson called [Eva Mendez](entity:character-recall-character-b05e6c77884b) in his account. After the mushrooms were purified with incense, the healer gave him six pairs, which he ate despite their bitter taste.
His visions shifted from geometric patterns to palaces and mythic scenes, and his orderly notes deteriorated as the night went on. The experience convinced him that mushrooms could open a door to worlds beyond ordinary perception, though his interpretation would not match María Sabina’s own understanding of her healing practice.
March 1956
Hubbard Recruits Stolaroff
[Al Hubbard](entity:character-recall-character-al-hubbard-96da91cfbc65) introduced [Myron Stolaroff](entity:character-recall-character-myron-stolaroff-28a424cb3672), an [Ampex](entity:organization-recall-organization-ampex-653a9bf367e2) engineer and spiritual seeker, to [LSD](entity:object-recall-object-lsd-adda711233e2) in [Vancouver](entity:location-recall-location-05399ccbb6cd). Stolaroff’s session ranged across planetary history and his own birth, leaving him convinced that the experience had revealed the unity of humanity and the reality of God.
Stolaroff shared his conviction with colleagues, helping establish a small circle interested in applying LSD to healthy people and creative work. The encounter also drew [Silicon Valley](entity:location-recall-location-silicon-valley-30b0e6e8fbcb) engineers into Hubbard’s expanding network.
1956
Osmond Names the Psychedelic
[Aldous Huxley](entity:character-recall-character-aldous-huxley-5e4c482103e4) and [Humphry Osmond](entity:character-recall-character-humphry-osmond-aed59e3b918a) exchanged possible names for drugs that seemed to enlarge the mind rather than mimic madness. Huxley offered “phanerothyme”; Osmond answered with “psychedelic,” a word meaning mind-manifesting.
The term offered a relatively neutral alternative to the psychotomimetic label and soon became the lasting name for the drug class. Its meaning would later acquire the cultural baggage of the [1960s](entity:time-recall-time-1960s-fa3d18a6c9cb), but it began as an attempt to describe an unfamiliar mental territory without calling it insanity.
May 13, 1957
Wasson Publishes His Account
Life magazine published [R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612)’s “Seeking the Magic Mushroom,” a long account of his Mexican ceremony. Its headline popularized the phrase “magic mushrooms,” and its vivid descriptions brought an Indigenous sacrament to millions of readers.
The article turned a private field expedition into a public event. It also framed the ceremony through R. Gordon Wasson’s own religious theory, while exposure would soon bring unwanted attention and commercial exploitation to the Mazatec community.
Mid-1950s
The Termite of the Paradigm
Researchers such as [Sidney Cohen](entity:character-recall-character-sidney-cohen-345b38a8d899) began to question the psychotomimetic model after their own [LSD](entity:object-recall-object-lsd-adda711233e2) sessions proved tranquil or transcendent rather than psychotic. Reports from volunteers likewise included unity, insight, and heightened feeling, alongside episodes of anxiety and hallucination.
The shift did not produce one simple replacement. A lower-dose psycholytic approach developed alongside a high-dose psychedelic model, each offering a different account of how altered consciousness might be used in therapy.
1958
Hofmann Isolates Psilocybin
After receiving Mexican mushroom specimens from [R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612), [Albert Hofmann](entity:character-recall-character-albert-hofmann-0f67006db3b1) isolated and named psilocybin and psilocin. He also developed a synthetic version of psilocybin that could be measured and administered in a laboratory.
The discovery separated the active compounds from the mushroom itself, making controlled research possible. It also sharpened the book’s central paradox: a molecule from nature could reliably occasion experiences that many people regarded as spiritual.
Beginning in 1956
Bill Wilson Tries LSD
[Bill Wilson](entity:character-recall-character-bill-wilson-31ef2ad19ae5), cofounder of [Alcoholics Anonymous](entity:organization-recall-organization-alcoholics-anony-6880f11c6939), took several [LSD](entity:object-recall-object-lsd-adda711233e2) sessions with [Sidney Cohen](entity:character-recall-character-sidney-cohen-345b38a8d899) and [Betty Eisner](entity:character-recall-character-betty-eisner-9fb7b6164d6a) in [Los Angeles](entity:location-recall-location-a4be76fb5f5a). He believed the drug could occasion the kind of spiritual awakening that had helped him become sober after a belladonna experience decades earlier.
Wilson considered whether LSD might have a place in recovery, but his colleagues feared that endorsing any mind-altering drug would undermine the fellowship’s identity. The episode exposed an unexpected link between psychedelic experience and the spiritual language of recovery.
After 1957
The Mushroom Story Reaches Mexico
Following the publicity around [R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612)’s article, visitors began traveling to [Huautla de Jiménez](entity:location-recall-location-huautla-de-jim-nez-ea572e5ade94) to seek [María Sabina](entity:character-recall-character-46cec6dbbe95) and the mushrooms. R. Gordon Wasson later regretted the torrent of commercial exploitation and attention that his publication had unleashed.
María Sabina’s neighbors blamed her for the disruption; her home was burned, and she was briefly jailed. Near the end of her life, she said the foreigners had spoiled the “saint children,” a consequence that sharply complicated the story of Western discovery.
1950s through the 1960s
The Saskatchewan Alcohol Trials
[Humphry Osmond](entity:character-recall-character-humphry-osmond-aed59e3b918a) and [Abram Hoffer](entity:character-recall-character-abram-hoffer-5f66cd801d84) treated hundreds of alcoholics with high-dose [LSD](entity:object-recall-object-lsd-adda711233e2), believing that a powerful session could trigger a lasting shift in outlook. They reported substantial rates of sobriety and argued that the subjective experience, rather than the drug’s chemical action alone, was central to the treatment.
The [Government of Saskatchewan](entity:organization-recall-organization-bceee7665920) helped make LSD therapy a standard treatment option for alcohol dependence. The results remained controversial, especially because the supportive setting and the therapists’ involvement were difficult to reproduce in a conventional controlled trial.
Early 1960s
The Toronto Replication Fails
The [Addiction Research Foundation](entity:organization-recall-organization-18b646e40b7e) in Toronto attempted to repeat the Saskatchewan results under stricter controls. Patients received [LSD](entity:object-recall-object-lsd-adda711233e2) in neutral rooms, with minimal clinician interaction; some were restrained or blindfolded.
The results were poor, and several volunteers endured frightening sessions. The failure highlighted the very issue that made psychedelic research hard to standardize: the drug’s effects could not readily be separated from the human presence and setting surrounding it.
Freshman year at Kenyon College in the early 1970s
Stamets Discovers His Calling
[Paul Stamets](entity:character-recall-character-paul-stamets-5c293e95ae55), who had struggled with a severe stutter, took what he believed was an enormous dose of mushrooms and climbed an oak as a thunderstorm approached. Clinging to the swaying tree, he experienced it as an axis connecting earth and universe and repeated a promise to stop stuttering.
The next morning, he spoke fluently to a woman he admired. The sudden change became a turning point, prompting Paul Stamets to devote himself to understanding the mushrooms that, in his view, had changed his life.
Mid-1970s
The Evergreen Mycology Circle
At [Evergreen State College](entity:location-recall-location-evergreen-state-coll-cac33972a347), [Paul Stamets](entity:character-recall-character-paul-stamets-5c293e95ae55) joined [Michael Beug](entity:character-recall-character-michael-beug-9380c8f48182), Jeremy Bigwood, and [Jonathan Ott](entity:character-recall-character-jonathan-ott-5f2f3c37aec0) in studying [Psilocybe](entity:creature-recall-creature-psilocybe-7eb3068873e1) mushrooms. The group identified new species, developed cultivation methods, and found ways to measure psilocybin and psilocin.
Their work redirected attention toward the [Pacific Northwest](entity:location-recall-location-f917a180946b), where previously overlooked species grew close at hand. It also helped establish the region as an intellectual and practical center of psychedelic mushroom culture.
Late 1950s to early 1960s
The Silicon Valley Research Circle
[Al Hubbard](entity:character-recall-character-al-hubbard-96da91cfbc65) brought [LSD](entity:object-recall-object-lsd-adda711233e2) to engineers and executives around [Silicon Valley](entity:location-recall-location-silicon-valley-30b0e6e8fbcb), including [Myron Stolaroff](entity:character-recall-character-myron-stolaroff-28a424cb3672), [Willis Harman](entity:character-recall-character-willis-harman-aaa84831e3e0), and [Don Allen](entity:character-recall-character-don-allen-5041ddbaa1e0). They explored whether psychedelic sessions could help healthy people loosen rigid thinking, deepen self-understanding, and solve creative problems.
The effort moved psychedelic work beyond treatment of illness and toward a broader ambition to change institutions and society. That aspiration would eventually collide with the scientific and political limits of the era.
Late 1950s
Ampex Considers a Psychedelic Corporation
[Myron Stolaroff](entity:character-recall-character-myron-stolaroff-28a424cb3672) and [Al Hubbard](entity:character-recall-character-al-hubbard-96da91cfbc65) tried to introduce psychedelic sessions and workshops into [Ampex](entity:organization-recall-organization-ampex-653a9bf367e2), hoping the experience might transform the company’s creative culture. Hubbard brought images of Christ and other religious objects into the work, which unsettled at least one executive.
The plan foundered, but it captured a bold [Silicon Valley](entity:location-recall-location-silicon-valley-30b0e6e8fbcb) experiment: treating [LSD](entity:object-recall-object-lsd-adda711233e2) not only as therapy but as a tool for organizational creativity. The ambition would continue through a separate research foundation.
1961 to 1966
IFAS Tests Creativity
[Myron Stolaroff](entity:character-recall-character-myron-stolaroff-28a424cb3672) and [Willis Harman](entity:character-recall-character-willis-harman-aaa84831e3e0) established the [International Foundation for Advanced Study](entity:organization-recall-organization-international-fo-e3c647c818e7), hiring [James Fadiman](entity:character-recall-character-james-fadiman-6200148c635c) and other staff to study [LSD](entity:object-recall-object-lsd-adda711233e2)’s effects on healthy volunteers. Participants paid for a package that included assessment, a guided session, and follow-up.
The foundation also gave artists, engineers, architects, and scientists a moderate dose while they worked on problems they found difficult. Participants reported fresh solutions, but the experiments lacked controls and relied heavily on self-assessment, leaving the promising results scientifically uncertain.
1955
Huxley Takes LSD with Hubbard
[Al Hubbard](entity:character-recall-character-al-hubbard-96da91cfbc65) introduced [Aldous Huxley](entity:character-recall-character-aldous-huxley-5e4c482103e4) to [LSD](entity:object-recall-object-lsd-adda711233e2), and the author described the resulting session as an overwhelming realization of love as a fundamental fact of the cosmos. The experience deepened the friendship between the writer and the well-connected guide.
Huxley and Hubbard increasingly imagined that psychedelics could transform society, not just treat individual illness. Their shared ambition would inspire both experiments with influential people and disagreement over how quickly the experience should be spread.
Late 1950s
Hubbard Builds a National Network
[Al Hubbard](entity:character-recall-character-al-hubbard-96da91cfbc65) moved among research centers in Canada and the United States, sharing [LSD](entity:object-recall-object-lsd-adda711233e2), treatment techniques, and clinical experience. He worked with [Humphry Osmond](entity:character-recall-character-humphry-osmond-aed59e3b918a) and [Abram Hoffer](entity:character-recall-character-abram-hoffer-5f66cd801d84) in Saskatchewan, visited researchers in [Los Angeles](entity:location-recall-location-a4be76fb5f5a), and helped establish LSD treatment at [Hollywood Hospital](entity:location-recall-location-9b0648d253a9).
His circuit made him a crucial connector in the first wave of research. Hubbard’s approach relied on trained guides and carefully arranged settings, even as he also pursued a larger project of introducing the experience to influential leaders.
1959
Cary Grant Praises LSD Therapy
After dozens of [LSD](entity:object-recall-object-lsd-adda711233e2) sessions with therapists including [Oscar Janiger](entity:character-recall-character-oscar-janiger-653345e343fa), [Cary Grant](entity:character-recall-character-a4c3e65ffb8d) publicly declared himself “born again” and said the treatment had helped him shed sadness and vanity. His endorsement presented LSD therapy as both fashionable and transformative.
The interview sparked a surge of public interest and requests for treatment. It also signaled that LSD had begun escaping clinical settings before [Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) became its most notorious public advocate.
Summer 1960
Leary Tries Psilocybin
[Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) took psilocybin beside a swimming pool in [Cuernavaca](entity:location-recall-location-85ac6cd12b75) and came away convinced that ordinary consciousness was only a small fraction of the mind’s potential. His enthusiasm returned with the force of a revelation, and he felt compelled to tell others.
The experience transformed his understanding of psychology and set him on a path from academic researcher toward psychedelic evangelist. His appetite for public persuasion would soon outgrow the boundaries of university science.
Fall 1960
The Harvard Project Begins
Back at Harvard, [Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) recruited [Richard Alpert](entity:character-recall-character-0b1fb3b77290) and launched the [Harvard Psilocybin Project](entity:organization-recall-organization-harvard-psilocyb-e0e34c3a5325) with the tacit approval of department chair [David McClelland](entity:character-recall-character-david-mcclelland-5d6433e53824). The group gave psilocybin to hundreds of volunteers in comfortable rooms, often with music and candlelight, while the researchers sometimes took the drug too.
The project produced vivid accounts but little controlled science. Its loose methods and enthusiasm for direct experience began to estrange colleagues who believed that the researchers were letting conviction dictate their conclusions.
Beginning in 1961
The Concord Prison Experiment
[Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) and [Ralph Metzner](entity:character-recall-character-ralph-metzner-20b17e85769d) organized a study asking whether psilocybin might reduce recidivism among prisoners at Concord. In sessions held inside the prison, a member of the research team took the drug alongside the inmates, while another stayed sober to observe.
Leary reported striking reductions in repeat imprisonment, but a later reconstruction by [Rick Doblin](entity:character-recall-character-rick-doblin-8c2a2ef24561) found no statistically significant difference from the control group. The episode became a lasting example of the gap between psychedelic promise and weak experimental design.
Good Friday 1962
The Good Friday Experiment
[Walter Pahnke](entity:character-recall-character-walter-pahnke-2266d605525a) gave psilocybin or an active placebo to divinity students at [Marsh Chapel](entity:location-recall-location-marsh-chapel-1d67fb1c55f5) in a controlled experiment on mystical experience. [Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7)’s role was tangential, and he had objected to the use of controls and placebo.
The study reported that psilocybin could occasion experiences resembling those described in mystical literature, though one participant’s crisis was not fully reported at the time. Its findings later inspired modern research at Johns Hopkins.
1962
Wasson Gives Sabina Psilocybin Pills
On a return visit to [Huautla de Jiménez](entity:location-recall-location-huautla-de-jim-nez-ea572e5ade94), [Albert Hofmann](entity:character-recall-character-albert-hofmann-0f67006db3b1) accompanied [R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612) and gave [María Sabina](entity:character-recall-character-46cec6dbbe95) synthetic psilocybin in pill form. She took two and said that they carried the spirit of the mushroom.
The encounter offered a striking meeting between traditional ceremony and laboratory chemistry. It also embodied the question at the heart of psychedelic research: whether the active compound could be separated from the ritual and cultural world that gave it meaning.
March 1962
Harvard’s Project Comes Under Fire
[Herbert Kelman](entity:character-recall-character-herbert-kelman-03b0d61996d6) convened a Harvard meeting to challenge the [Psilocybin](entity:object-recall-object-psilocybin-54cad95fedbb) Project’s lack of rigor and its pressure on students to join the drug-taking circle. He argued that the project had developed an anti-intellectual atmosphere in which experience was prized over careful analysis.
An undergraduate Crimson reporter was present, and the dispute reached the press the next day. The controversy moved from a departmental conflict into a public scandal, placing the project and its leaders under intense scrutiny.
Late 1962
Leary Announces IFIF
After Harvard restricted access to its psilocybin supply, [Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) and [Richard Alpert](entity:character-recall-character-0b1fb3b77290) announced the [International Federation for Internal Freedom](entity:organization-recall-organization-international-fe-8d946cbeded6). They denounced the new controls as an underground threat to scientific freedom and urged people to ask who had the right to control their consciousness.
The move marked a clear departure from university research toward cultural revolution. Leary’s stated goal was to introduce psychedelics to millions, a scale and style that alarmed colleagues who feared the political consequences.
1963
Alpert and Leary Leave Harvard
[Andrew Weil](entity:character-recall-character-andrew-weil-212755b2ce34) investigated claims that [Richard Alpert](entity:character-recall-character-0b1fb3b77290) had given psilocybin to undergraduates in violation of university rules. After a student acknowledged receiving the drug, Harvard dismissed Alpert; [Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) was already planning to leave and soon departed as well.
The story became national news, helping make Leary famous and deepening public alarm about psychedelics. Weil later regretted his part in the affair and eventually apologized to both Alpert, by then Ram Dass, and Leary.
December 1960
Ginsberg Urges a Psychedelic Crusade
After taking psilocybin at [Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7)’s home, [Allen Ginsberg](entity:character-recall-character-allen-ginsberg-40023122c292) proposed preaching peace and love to the world. He tried to call political leaders and urged Leary to lead a new movement, casting the Harvard professor as a respectable figure suited to a messianic role.
The encounter helped inflate Leary’s sense of historical purpose and linked psychedelics to the counterculture. It also showed how quickly an ego-dissolving experience could encourage a powerful new ego of mission and destiny.
1962
Leary and Hubbard Clash
[Al Hubbard](entity:character-recall-character-al-hubbard-96da91cfbc65) warned [Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) that the public campaign for widespread psychedelic use would provoke authorities and damage legitimate research. Leary dismissed Hubbard as a flamboyant operator, while Hubbard regarded Leary’s approach as reckless and dangerous.
Their dispute represented a deeper strategic divide: Hubbard favored gradual influence through elites and guided sessions, while Leary wanted to democratize the experience at once. During one session, Hubbard reportedly became preoccupied with the idea of shooting Leary, alarming [Humphry Osmond](entity:character-recall-character-humphry-osmond-aed59e3b918a).
1960 to the mid-1960s
The Merry Pranksters Take LSD
[Ken Kesey](entity:character-recall-character-ken-kesey-31eb0178c42b) first encountered [LSD](entity:object-recall-object-lsd-adda711233e2) through a government-funded experiment at [Menlo Park Veterans Hospital](entity:location-recall-location-fc642dfba102), unaware that the program was connected to the [CIA](entity:organization-recall-organization-422e0adc2ba6). He responded by organizing the [Merry Pranksters](entity:organization-recall-organization-14445eb5cff5) and giving large numbers of young people access to psychedelic experiences at the Acid Tests.
The episode became a dramatic reversal of the government’s aims: an experiment intended to explore the drug’s possible uses helped fuel a cultural movement. The resulting public visibility made it increasingly difficult to distinguish research from recreation.
Spring 1966
Brand Campaigns for Earth’s Image
On [LSD](entity:object-recall-object-lsd-adda711233e2), [Stewart Brand](entity:character-recall-character-stewart-brand-4b99b54a3c89) looked across [San Francisco](entity:location-recall-location-d0db84fe8c04) and began imagining Earth as a finite spaceship rather than an inexhaustible, flat expanse. He devised a button asking why no one had seen a photograph of the whole planet and began campaigning for such an image.
The campaign reached NASA and Congress, and in 1968 astronauts photographed Earth from space. Brand also published the [Whole Earth Catalog](entity:object-recall-object-whole-earth-catalog-8ca70ad3d051), helping turn an altered perspective into a durable environmental and cultural symbol.
1962 to 1966
The Public Backlash Grows
As bootleg [LSD](entity:object-recall-object-lsd-adda711233e2) spread, people experiencing panic and psychosis began arriving in emergency rooms. Sensational news stories and disputed claims about chromosome damage fed a widening moral panic, while the legitimate and illicit uses of the drug became increasingly difficult to separate in public debate.
Researchers such as [Sidney Cohen](entity:character-recall-character-sidney-cohen-345b38a8d899) reported both the relative safety of supervised sessions and the real dangers of careless use. Their measured cautions struggled to compete with headlines presenting LSD as an uncontrolled threat.
April 1966
Sandoz Withdraws Delysid
Alarmed by the controversy surrounding [LSD](entity:object-recall-object-lsd-adda711233e2), [Sandoz](entity:organization-recall-organization-sandoz-163fd0380c25) withdrew [Delysid](entity:object-recall-object-delysid-e5a10cf0f254) from circulation and transferred much of its remaining supply to the U.S. government. The decision cut off a major source of the drug for dozens of active research programs.
The withdrawal helped bring the first wave of psychedelic science to an abrupt end. Even promising clinical work became entangled with the fear that psychedelics could not be contained within medicine or the laboratory.
May 1966
The Senate Hears the LSD Case
[Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) and [Sidney Cohen](entity:character-recall-character-sidney-cohen-345b38a8d899) testified before the U.S. Senate as officials debated [LSD](entity:object-recall-object-lsd-adda711233e2) research and regulation. Senator Robert F. Kennedy questioned why studies once considered worthwhile should suddenly be stopped and warned that society might lose a useful medical tool.
The defense failed to restore confidence or prevent a broader shutdown. The hearing revealed how the public scandal had overwhelmed efforts to draw a boundary between supervised therapy and uncontrolled use.
October 1966
The FDA Halts Research
The [FDA](entity:organization-recall-organization-fd2157f46eca) ordered researchers across the United States to stop psychedelic studies. At the [International Foundation for Advanced Study](entity:organization-recall-organization-international-fo-e3c647c818e7), [James Fadiman](entity:character-recall-character-james-fadiman-6200148c635c) received the order just as four participants had been dosed for a problem-solving session; the team delayed acknowledging the letter until the next day.
Almost all U.S. research programs closed. The work continued at [Spring Grove](entity:location-recall-location-spring-grove-1172c2cd43df) for a time, but psychedelic therapy and research were increasingly forced into secrecy and informal networks.
January 1967
The Human Be-In
[Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) addressed a crowd of roughly twenty-five thousand people at the [Human Be-In](entity:action-recall-action-f898ad3c7ae0) in [San Francisco](entity:location-recall-location-d0db84fe8c04), urging them to “turn on, tune in, drop out.” The slogan joined psychedelics to youth rebellion, resistance to war, and rejection of conventional authority.
The gathering cemented Leary’s public role as the movement’s most visible spokesman. It also strengthened the cultural association that made it harder for researchers to defend psychedelics as a medical or scientific subject.
1966 to 1970
Leary’s Arrest and Flight
After marijuana was found in his car at the [Laredo](entity:location-recall-location-4bef96e6b74e) border, [Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) faced a severe federal sentence and years of legal conflict. In 1970 he escaped prison with help from the [Weathermen](entity:organization-recall-organization-0e1323285844) and fled through Algeria, Switzerland, and other countries before U.S. agents captured him in Afghanistan.
The pursuit made Leary a symbol of the government’s campaign against psychedelics and countercultural dissent. His highly visible legal troubles further fused his personal story with the drug controversy.
1966 to 1976
Spring Grove Continues the Work
The [Maryland Psychiatric Research Center at Spring Grove](entity:organization-recall-organization-maryland-psychia-3bbe610983b7) was the major U.S. program to survive the purge of psychedelic research. Researchers including [Stanislav Grof](entity:character-recall-character-stanislav-grof-9798f8cd4404), [Bill Richards](entity:character-recall-character-bill-richards-4cd5d918b3ea), and [Walter Pahnke](entity:character-recall-character-walter-pahnke-2266d605525a) continued studying treatment for alcoholism, schizophrenia, and the distress of cancer patients.
The center’s director, Albert Kurland, used his Washington connections to keep the program operating and to obtain [LSD](entity:object-recall-object-lsd-adda711233e2). Its survival preserved a thread of clinical experience even as most of the country’s research disappeared.
After 1970
Psychedelic Practice Goes Underground
With psychedelics prohibited for medical use, [Leo Zeff](entity:character-recall-character-leo-zeff-92a9d678b5b8) and other therapists continued guided sessions in secret. They developed practical agreements about confidentiality, boundaries, safety, and the role of the guide, drawing on earlier research and on ceremonial traditions.
This underground lineage preserved techniques that later influenced university trials, even though researchers were often reluctant to acknowledge the connection. It also underscored the need for a reliable social container around an unusually powerful experience.
February 1979
The First Wave Reunites
Many central figures from the first generation of American psychedelic research gathered at [Oscar Janiger](entity:character-recall-character-oscar-janiger-653345e343fa)’s home in [Los Angeles](entity:location-recall-location-a4be76fb5f5a). [Sidney Cohen](entity:character-recall-character-sidney-cohen-345b38a8d899) asked what their work had meant, and suggested that it had disrupted the frame of reference of millions.
[Myron Stolaroff](entity:character-recall-character-myron-stolaroff-28a424cb3672) confronted [Timothy Leary](entity:character-recall-character-timothy-leary-295fcddbe7f7) about the damage his public actions had done to legitimate research. Leary replied that they had played different roles in a larger historical process, leaving the group with a more complicated account than a simple division between heroes and villains.
Late 1990s
The Psychedelic Revival Begins
A new generation of researchers began excavating the forgotten clinical literature of the [1950s](entity:time-recall-time-1950s-9d888ed1c4fe) and [1960s](entity:time-recall-time-1960s-fa3d18a6c9cb). Psychiatrists such as [Stephen Ross](entity:character-recall-character-stephen-ross-bf8fe82cbd10) discovered that tens of thousands of people had participated in trials and that the earlier work had explored many conditions now treated as if psychedelics had never been studied.
This historical recovery helped researchers make a case for restarting experiments under modern standards. It also revealed that the revival was not a wholly new project, but a resumption of a scientific conversation interrupted by cultural pressure.
2006
The UDV Wins Religious Protection
The U.S. Supreme Court ruled in favor of the [União do Vegetal](entity:organization-recall-organization-uni-o-do-vegetal-e311c862b06d) church’s right to use ayahuasca as a sacrament. The case established that the government could not prohibit the church’s religious use without meeting the required legal standard.
The decision became one of the turning points in the modern revival of psychedelic research. It demonstrated that psychedelic substances could be treated not only as medical questions but also as matters of religious liberty.
2006
Johns Hopkins Tests Mystical Experience
Roland Griffiths and colleagues at Johns Hopkins published a controlled study in which psilocybin frequently occasioned experiences volunteers rated among the most meaningful of their lives. Many reported lasting spiritual significance and positive changes.
The study showed that mystical-type experience could be investigated prospectively under laboratory conditions. It helped reopen scientific interest in consciousness and gave the new research movement a landmark result.
After the 2006 study and before 2015
Pollan Meets the Hopkins Volunteers
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) interviewed volunteers whose psilocybin sessions had taken place years earlier but whose effects remained vivid. [Richard Boothby](entity:character-recall-character-richard-boothby-1fd6ff6bc7bc) described surrendering to an expanding visionary landscape, while [John Hayes](entity:character-recall-character-john-hayes-5875769616fb) spoke of discovering a reality beneath ordinary perception.
The interviews left Michael Pollan both envious and uncertain about how to judge the insights people brought back. Their conviction that love, death, and reality had been revealed to them became the questions that drove his reporting and eventual experiments.
Before Michael Pollan’s Washington visit
Stamets’s Fungal Worldview
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) came to know [Paul Stamets](entity:character-recall-character-paul-stamets-5c293e95ae55) as a mycologist who combined careful practical work with expansive claims about fungi’s role in nature. Stamets promoted mycoremediation, medicinal mushrooms, and the idea that mycelial networks linked forests in an information-sharing web.
Some of his metaphors gained support from emerging studies of plant-fungal connections, while his more sweeping claims remained speculative. Michael Pollan became curious about how Stamets’s own psychedelic experiences had shaped his work and worldview.
1957 and the years that followed
Wasson’s Mushroom Theory Revisited
[R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612) interpreted his experience with [María Sabina](entity:character-recall-character-46cec6dbbe95) as evidence that psychoactive mushrooms had helped kindle humanity’s religious impulse. Yet María Sabina used the mushrooms chiefly for healing and divination, and R. Gordon Wasson had gained access by asking for help locating his son.
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465)’s historical investigation emphasizes the distance between R. Gordon Wasson’s theory and the local meaning of the ceremony. The encounter raises enduring questions about who gets to interpret a tradition and what is lost when sacred practices are exposed to mass attention.
December, during Michael Pollan’s reporting trip
Stamets Opens His Home
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) visited [Paul Stamets](entity:character-recall-character-paul-stamets-5c293e95ae55) at his home near [Little Skookum Inlet](entity:location-recall-location-423f79f530e5), where fungi appeared throughout the house and its design. Stamets told stories of his company, his mushroom research, and his attempt to defeat carpenter ants with a deliberately delayed-sporulating fungus.
The visit made Paul Stamets’s intensity and ingenuity inseparable: he was a visionary advocate, but also an inventor and entrepreneur who built and tested things. His home displayed the way a life organized around fungi could become both scientific practice and personal cosmology.
Before the December mushroom hunt
The Psilocybin Stooping Lessons
Preparing for the hunt, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) studied [Paul Stamets](entity:character-recall-character-paul-stamets-5c293e95ae55)’s field guide and tried to identify little brown mushrooms by their gills, spores, and bruising. He learned how easily a promising-looking mushroom could be confused with a deadly one, and how limited a rule of thumb could be.
The danger of mistaken identification forced him to recognize the difference between reading about mushrooms and knowing them in the field. He decided to wait for Paul Stamets’s guidance before making any consequential identification.
Early December
The Columbia River Mushroom Hunt
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) and [Paul Stamets](entity:character-recall-character-paul-stamets-5c293e95ae55) searched a public park near the mouth of the [Columbia River](entity:location-recall-location-160abddd89fe) for [Psilocybe](entity:creature-recall-creature-psilocybe-7eb3068873e1) azurescens. After a long stretch of false starts, Paul Stamets found one near a parking space; its bruised stem turned blue, revealing oxidized psilocin.
They found several more, and Michael Pollan gradually learned to recognize the caramel-colored caps, though Paul Stamets remained far more successful. The setting at the edge of continent, ecosystem, and civilization became part of Stamets’s account of the mushrooms’ power to bring people to the edge of consciousness.
That December evening
The Azzies Are Dried
The mushrooms were photographed and set near a heater to dry. Their shriveled, gray-blue remains looked too small and unimpressive to carry the consequences [Paul Stamets](entity:character-recall-character-paul-stamets-5c293e95ae55) described.
When Paul Stamets warned that azurescens could be exceptionally strong and might cause temporary paralysis, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465)’s eagerness to try one diminished. The warning made the distance between curiosity and risk feel concrete.
Weeks after the Columbia River hunt
The Mushroom’s Possible Strategy
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) asked chemist [Michael Beug](entity:character-recall-character-michael-beug-9380c8f48182) why a fungus would produce psilocybin. Beug doubted that it functioned mainly as a defense, since the compounds appeared in abundance in the mushroom’s fruiting body rather than its more vulnerable underground mycelium.
Beug proposed that more potent mushrooms may have been eaten more often, spreading their spores through animals attracted to the effects. [Giorgio Samorini](entity:character-recall-character-giorgio-samorini-22362528c3ce)’s more speculative “depatterning factor” suggested that altered behavior might sometimes create useful variation during environmental change.
Several months after the December hunt
The Author and Judith Take Azzies
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) and [Judith](entity:character-recall-character-judith-828392ad7f2b) drank tea made from the dried mushrooms they had found. Judith quickly felt distressed, describing a separation between mind and body, and insisted on returning home; Michael Pollan tried to reassure her and watched for neighbors as they hurried back.
At home, Judith settled on the couch, while Michael Pollan continued the experience alone. The episode showed how strongly a journey could be shaped by setting, companionship, and a sitter’s divided attention.
The same August afternoon
A Garden Becomes Alive
Outside on the porch, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) became acutely aware of insects, hummingbirds, and the garden’s sounds. As he walked to his writing house, he felt the plants’ colors and scents as immediate presences and experienced an intensified poignancy about the passing of summer and family time.
Through the hydrangea leaves, he felt as if he could look at the world through a plant’s eyes and be met by the plant’s gaze. The experience did not convince him of the supernatural, but made nature’s other forms of subjectivity feel emotionally real.
Later that August afternoon
The Trees Become His Parents
Looking from the writing house toward two old trees, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) suddenly saw his father in the ash and his mother in the oak. Their aging and eventual deaths became present in the landscape, and he made a practical note to call an arborist about the leaning tree.
The moment joined ordinary concern with a deepened sense of mortality. It showed how familiar objects could become charged with feeling without requiring any supernatural explanation.
Dusk that August afternoon
Pollan Feels Part of the Garden
As dragonflies crossed the garden and flowers drew pollinators, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) no longer felt like an observer standing apart from nature. He experienced himself as one being among many, inside a web of reciprocal relations.
The insight echoed [Alexander von Humboldt](entity:character-recall-character-885e5fbc7fb5)’s view that nature is interaction rather than a collection of objects. Michael Pollan left open whether the plants had truly addressed him, but concluded that the mushroom had helped him notice what ordinary consciousness usually filters out.
After the mushroom experience and before the first guided journey
The Mindful Guide Search
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) initially hoped to join a university trial, but the available studies were no longer recruiting healthy volunteers. He began looking for an underground guide willing to work with a journalist who intended to write about the experience.
He met guides with widely varying training and styles, and quickly rejected some after hearing their casual attitudes toward risk or their unusual beliefs. The search taught him that trust, boundaries, and competent preparation mattered as much as the drug itself.
Before Michael Pollan’s first guided journey
The Cardiologist’s Warning
After an episode of atrial fibrillation, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) consulted his cardiologist about the substances he might encounter. The doctor advised him to avoid [MDMA](entity:object-recall-object-mdma-0b89c7f0afc9), which can affect the cardiovascular system, but was less concerned about the classical psychedelics.
The conversation established a physical limit on Michael Pollan’s plans and made his age part of the story. His heart was no longer an abstract concern but a factor shaping decisions about altered states.
Before the first LSD session
Fritz’s Remote Retreat
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) traveled to Fritz’s isolated mountain home, far from cell service and emergency care. Fritz was the son of a Nazi serviceman, a former radical, and an experienced guide whose life had been shaped by [LSD](entity:object-recall-object-lsd-adda711233e2), Jungian psychology, bodywork, and training with [Stanislav Grof](entity:character-recall-character-stanislav-grof-9798f8cd4404).
Despite the setting’s risks, Michael Pollan found Fritz warm and modest rather than self-important. Fritz described a three-day format that began with breathwork, followed by an LSD session and an integration conversation.
The afternoon before the first LSD session
Breathwork Opens a Trance
Fritz led [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) through rapid, deep breathing with eyeshades and rhythmic music. After several minutes, Michael Pollan’s body seemed to take over, moving in time with the drums as he imagined galloping on a powerful black horse.
The trance lasted more than an hour and left him exhilarated. It also showed him how sharply consciousness could shift without a drug, through breath and setting alone.
The evening before the first LSD session
The Heartbeat Disrupts the Plan
After the breathwork, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) felt his heart begin to beat irregularly in what seemed like an atrial-fibrillation episode. The sensation lasted for hours, and the remote location made the possibility of a medical emergency difficult to ignore.
He debated through a nearly sleepless night whether to cancel the [LSD](entity:object-recall-object-lsd-adda711233e2) session. By morning he felt well enough to proceed, but the episode made clear that breathwork itself was not physiologically risk-free.
The morning after the breathwork session
Pollan Begins the LSD Journey
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) took a modest dose of [LSD](entity:object-recall-object-lsd-adda711233e2) at Fritz’s retreat after asking for a promise that help would be called if anything went wrong. With eyeshades on, he entered a forest-like landscape summoned by the music and moved through shifting scenes of memory and imagination.
The journey remained partly steerable, but its logic and images carried him beyond ordinary reflection. The familiar trail through the redwoods became an open wooden structure representing the stages of his life with [Judith](entity:character-recall-character-judith-828392ad7f2b).
During the LSD journey
Family Memories Surface
As the music changed, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) watched scenes of his son Isaac’s life and considered what he wanted to tell him. The thoughts turned inward: he saw how often he had played the dependable family problem-solver and how rarely he allowed himself to admit uncertainty or vulnerability.
Compassion spread beyond his immediate family to people from childhood, including a music teacher he and his classmates had once tormented. The experience made ordinary insights about love and kindness feel newly vivid and difficult to dismiss.
The days after the first LSD session
LSD’s First Afterglow
In integration with Fritz, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) described a low-dose experience that loosened the ego without erasing it. He felt that his emotions had become more accessible and that the journey had offered a brief, unusually vivid way of seeing his relationships.
For several days afterward, he felt more present, patient, and appreciative. The afterglow faded, however, leaving him disappointed that the change had not been more lasting and curious about going further.
Several months after the LSD journey
Mary’s Ceremony Begins
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465)’s second guided journey began in Mary’s suburban loft, arranged with an altar of candles, plants, crystals, a crow’s wing, and personal objects. Mary prayed through the cardinal directions and offered him a large mushroom, asking him to examine and eat it slowly.
The ceremony felt theatrical to Michael Pollan, but Mary’s conviction and care helped him suspend disbelief. He ate two grams of mushroom with chocolate, with the option of taking more during the session.
Early in Mary’s psilocybin session
The Computer World Takes Hold
The first music drew [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) into a dark, digital city of black geometric forms. He disliked the landscape and wanted to escape, but changing songs altered its emotional tone without immediately removing him from it.
When he took off his eyeshades, ordinary light returned in a jeweled and sparkling form. In the bathroom, even the water became a field of brilliant fractal light, showing how dramatically perception had shifted.
During the first half of the psilocybin session
Mary Becomes María Sabina
When Mary offered [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) a booster, he looked up and saw her transformed into [María Sabina](entity:character-recall-character-46cec6dbbe95), the Mazatec healer associated with [R. Gordon Wasson](entity:character-recall-character-r-gordon-wasson-729b4f477612)’s first ceremony. He accepted the mushroom from the imagined figure but did not tell Mary what he had seen until later.
The vision joined his own journey to the history he had been reporting. It also made visible how images, memory, and expectation could reorganize the people and objects before him.
Midway through the psilocybin session
The Mask Test Fails
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) tried to test whether psilocybin would disrupt the brain’s tendency to perceive a rotating hollow face mask as convex. He watched the animation, but his mind still corrected the illusion, only somewhat more slowly than before.
After another dose, he tried again, but the mask dissolved into a gray, melting shape before he could judge it. The failed experiment became an amusing reminder that a psychedelic journey was not a controlled laboratory environment.
After the booster dose
The Ego Scatters
Back in the digital landscape, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) watched his familiar self break apart into small slips of paper scattered across the scene. A wider, detached awareness remained, calm and untroubled by the loss of the identity he had taken to be himself.
He wondered whether this awareness resembled [Aldous Huxley](entity:character-recall-character-aldous-huxley-5e4c482103e4)’s “[Mind at Large](entity:expression-recall-expression-mind-at-large-16db620fbbdd),” but found no reason to assume it came from beyond the brain. What mattered immediately was discovering that the ego could disappear without annihilating awareness.
Late in the psilocybin session
The Dead Return in Vision
When [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) looked in the bathroom mirror, his face seemed to become a skull resembling his dead grandfather Bob. Later, in a desert landscape, he encountered a procession of dead relatives and friends and realized that he had not properly mourned many of them.
The vision became particularly frightening when his aunt’s face shifted into [Judith](entity:character-recall-character-judith-828392ad7f2b)’s, who had survived breast cancer. He confronted his fear of losing her and wept, meeting mortality through a mixture of grief and tenderness.
The final hours of the psilocybin session
Bach Becomes the Cello
At [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465)’s request, Mary played Bach’s cello suite in D minor. The music became more than sound: he felt himself turn into the strings, the instrument’s resonant interior, and finally the stream of sound moving through space.
For the duration of the music, he felt reconciled to the deaths he had witnessed and to his own eventual death. The experience became the emotional center of the journey and later scored as a complete mystical-type experience on the survey he completed.
The day after Mary’s session
Pollan Integrates the Mushroom Journey
During integration, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) reflected that he had survived the dissolution of his ego without being overwhelmed by hidden terrors. He came away with a sense that another, less defensive perspective on the world might be cultivated through practice.
He also recognized that the experience had not made him believe in God or a supernatural afterlife. Instead, it gave emotional force to ideas about connection, love, and the wider scope of consciousness that had previously seemed abstract.
After the psilocybin journey
Pollan Meets the Toad
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) met Rocío, a Mexican therapist who collected [Sonoran Desert](entity:location-recall-location-f28b6cd3e788) toads and administered their dried venom. She explained that vaporized venom could bring an abrupt, overwhelming experience lasting only a short time, and described reactions ranging from stillness to panic and vomiting.
The limited medical evidence and frightening reports gave Michael Pollan serious doubts. A friend’s account of an intense journey that seemed to reveal an infinite realm of love nevertheless helped persuade him to try it.
The day of the 5-MeO-DMT session
The Toad Journey Begins
After watching another participant undergo a calm session, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) agreed to smoke a measured dose of vaporized toad venom. Rocío asked him to offer thanks and hold an intention before he inhaled.
The drug’s effects arrived so rapidly that Michael Pollan had no memory of exhaling or being settled beneath a blanket. He experienced a roar of energy and terror that seemed to destroy every familiar point of reference.
Minutes into the toad journey
Terror and Reconstitution
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465)’s sense of self and even the detached awareness he had experienced on psilocybin seemed to be consumed by terror. He later reached for images of a rocket launch and a reversed Big Bang to describe a sensation that had no stable words or observer.
Then time, space, identity, and body seemed to reassemble. Relief became ecstatic, and Michael Pollan felt reborn, imagining an infant self that transformed into his son Isaac and feeling gratitude simply for the fact of existence.
The later phase of the toad journey
The Lesson of Being
After the violent onset, [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) reflected on being and doing. He recognized how quickly he tried to solve other people’s problems instead of simply staying with them, and thought of a recent argument with [Judith](entity:character-recall-character-judith-828392ad7f2b) as an example.
His proposed lesson was to do less and be more, but he immediately saw that making a resolution was itself an act of doing. The journey ended with a philosophical knot rather than a clear instruction, leaving its meaning unresolved.
After the toad and psilocybin journeys
The Mystical Questionnaire
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) completed the [Mystical Experience Questionnaire](entity:object-recall-object-mystical-experience-qu-a81ed3966868) to test whether the terrifying toad session counted as mystical. Its items seemed to fit awkwardly, yet his score barely cleared the threshold for a complete experience.
The same measure fit his psilocybin journey more naturally, especially the cello passage, and gave him a higher score. The comparison left him questioning whether the survey could capture radically different forms of experience without forcing them into its categories.
After the three guided journeys
Mysticism Without Belief
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) found that mystical writers such as [Ralph Waldo Emerson](entity:character-recall-character-e4fbbcaa0776), [Walt Whitman](entity:character-recall-character-eb439fa827f5), and [Alfred, Lord Tennyson](entity:character-recall-character-9f62c11f8f3a) now described recognizable states of mind rather than remote religious abstractions. He still doubted supernatural explanations, but no longer dismissed the experiences themselves.
He came to define spirituality less as belief in the supernatural than as a temporary loosening of ego and a widening of concern. The journeys had changed his vocabulary for discussing consciousness, nature, death, and the possibility of connection.
2009 to 2012
Carhart-Harris Maps the Brain
At [Imperial College London](entity:organization-recall-organization-imperial-college-9d5f6930d763), [Robin Carhart-Harris](entity:character-recall-character-robin-carhart-harri-ece86f011183) and [David Nutt](entity:character-recall-character-david-nutt-80b2660947b7) began using brain imaging to study the effects of psilocybin. Carhart-Harris expected increased activity, but the first results instead showed reduced blood flow in the default mode network.
The reduction correlated with volunteers’ reports of ego dissolution. The finding suggested a possible physical counterpart to the loss of self and gave neuroscience a new way to investigate subjective psychedelic experience.
2001
The Default Network Is Discovered
Neurologist [Marcus Raichle](entity:character-recall-character-marcus-raichle-84710de29221) described a set of brain regions that became active when people were at rest rather than performing a task. The network appeared to support mind-wandering, self-reflection, memory, and mental travel between past and future.
Later psychedelic research connected reduced activity in this network with ego dissolution. Its discovery offered researchers a framework for considering how the brain’s ordinary sense of self might be organized and temporarily loosened.
After the 2012 imaging findings
Meditators and Psychedelic Brains
[Judson Brewer](entity:character-recall-character-judson-brewer-9c20db1e54bf) noticed that brain scans of experienced meditators resembled those of people taking psilocybin, particularly in the quieting of the default mode network. The similarity suggested that meditation and psychedelics might reach some overlapping states by very different routes.
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) later visited [Brewer](entity:character-recall-character-8fc0ad0bb963)’s laboratory to observe activity in his own posterior cingulate cortex. The comparison became a bridge between contemplative practice and the neuroscience of altered consciousness.
2014
The Entropic Brain Theory
[Robin Carhart-Harris](entity:character-recall-character-robin-carhart-harri-ece86f011183) proposed that psychedelics raise the brain’s entropy, loosening patterns of activity that normally keep perception and thought ordered. He suggested that the default mode network helps maintain a coherent ego, while its temporary disruption allows less constrained mental states to emerge.
The model offered a possible account of both the therapeutic promise and the risks of psychedelics: greater flexibility may help break rigid patterns, while excessive disorder can become frightening or destabilizing. The theory remained a hypothesis, not a settled explanation.
2016
Children’s Lantern Consciousness
Developmental psychologist [Alison Gopnik](entity:character-recall-character-alison-gopnik-efbb7952b05b) proposed that young children experience a broad, diffuse form of attention unlike adults’ narrower focus. She called the child’s mode “lantern consciousness,” contrasting it with the adult’s “spotlight consciousness.”
Gopnik saw parallels between children’s exploratory learning and the high-entropy cognition described in psychedelic research. The comparison suggested that altered states might temporarily reopen ways of perceiving that adulthood and habit tend to narrow.
After interviewing Judson Brewer
Pollan Studies His Own Brain
At [Brewer](entity:character-recall-character-8fc0ad0bb963)’s laboratory in [Worcester](entity:location-recall-location-worcester-3ffc5cea8759), [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) wore a cap of sensors while researchers monitored his posterior cingulate cortex. Reading self-descriptive adjectives raised activity, while meditation and loving-kindness practice lowered it.
When Michael Pollan recalled an image from a psychedelic journey in which his ego floated away from a landscape, the measured signal fell sharply. The experiment could not prove what the image meant, but suggested that recollection itself might sometimes alter the brain’s self-related activity.
2015 to 2016
The Depression Pilot Study
[Robin Carhart-Harris](entity:character-recall-character-robin-carhart-harri-ece86f011183)’s team at [Imperial College London](entity:organization-recall-organization-imperial-college-9d5f6930d763) conducted an open-label feasibility study of psilocybin for treatment-resistant depression. The volunteers improved rapidly after treatment, and some remained in remission for months, though the study was small and had no control group.
Interviews by [Rosalind Watts](entity:character-recall-character-rosalind-watts-2708382f65ed) found that many participants described a shift from disconnection toward renewed contact with feelings, other people, and nature. The results encouraged regulators to consider a larger trial.
During the Imperial depression trial
Ian Faces His Father
[Ian Rouiller](entity:character-recall-character-ian-rouiller-67a916cca698), a participant in the depression study, confronted a terrifying image of his abusive father, who appeared as an armed military horse. Instead of pushing the image away, he followed his guide’s advice to move toward it and look it in the eye.
The image suddenly seemed absurd, and the fear gave way to a fuller range of emotion and compassion. Ian experienced months of relief, though his depression later returned and he resumed medication.
2016 to early 2017
The FDA Broadens the Question
Researchers initially sought regulatory approval to study psilocybin for anxiety and depression in patients with life-changing diagnoses. The [FDA](entity:organization-recall-organization-fd2157f46eca) and [European Medicines Agency](entity:organization-recall-organization-8584c029231b) responded that the emerging evidence might justify a broader investigation into depression itself.
The regulators’ interest surprised researchers who had expected it to be difficult even to study a controlled drug in seriously ill patients. The change suggested that psychedelic therapy was beginning to earn institutional attention beyond a narrow palliative setting.
December 2016
The Cancer Trial Results Appear
The [New York University](entity:location-recall-location-new-york-university-2fa02164406f) and Johns Hopkins teams published results from small trials in which many cancer patients reported substantial reductions in anxiety and depression after psilocybin-assisted therapy. The improvements persisted for months, and the intensity of mystical experience correlated with better outcomes.
The findings drew support from prominent figures in psychiatry while leaving open questions about blinding, placebo effects, and how to interpret mystical experience. They made psychedelic therapy newly respectable, though not yet proven as a standard treatment.
April 2010
Patrick Enters the Trial
After reading a New York Times article about psychedelic research, [Patrick Mettes](entity:character-recall-character-patrick-mettes-0e564a5280f6) contacted [New York University](entity:location-recall-location-new-york-university-2fa02164406f) and volunteered for a study addressing cancer-related distress. His cancer had spread, and the prospect of death was becoming increasingly difficult to bear.
His wife, [Lisa Callaghan](entity:character-recall-character-lisa-callaghan-c70d8de53b3d), initially resisted the idea because she wanted him to keep fighting. Patrick nevertheless enrolled and began preparatory meetings with [Tony Bossis](entity:character-recall-character-tony-bossis-4fe2986c2e91), setting the stage for a session that would reshape how he faced his illness.
January 2011
Patrick’s Psilocybin Session
[Patrick Mettes](entity:character-recall-character-patrick-mettes-0e564a5280f6) arrived alone at the [NYU dental school](entity:location-recall-location-88a8d6407aa1) for his session with [Tony Bossis](entity:character-recall-character-tony-bossis-4fe2986c2e91) and Krystallia Kalliontzi. As the drug took effect, he experienced visions of rebirth, felt overwhelming love, and described a brief encounter with the possibility of death before choosing to return to his life with Lisa.
He came away believing that love was the central purpose of existence and that the cancer was not the whole story of his life. The experience did not cure his illness, but it changed his emotional relationship to it.
Weeks after his session in 2011
Patrick Reconsiders His Life
In follow-up meetings, [Patrick Mettes](entity:character-recall-character-patrick-mettes-0e564a5280f6) described the experience as a window onto a possible existence beyond the body. He meditated, felt closer to Lisa, and said that he was happier than he had ever been, even as the cancer continued to advance.
Lisa also noticed a change in him: greater patience and pleasure in small experiences, such as a sandwich or a walk. Patrick’s attention shifted from the narrow prospect of dying toward the time and relationships still available to him.
March 2012
Patrick Stops Chemotherapy
After months of improved spirits and continuing treatment, [Patrick Mettes](entity:character-recall-character-patrick-mettes-0e564a5280f6) told [Lisa Callaghan](entity:character-recall-character-lisa-callaghan-c70d8de53b3d) that he wanted to stop chemotherapy. He did not want to die, but no longer wanted to live in the way the treatment required.
The decision marked a change from fighting at any cost toward choosing how to spend the life remaining to him. His psilocybin session had not removed the illness; it had helped him meet the decision with greater clarity.
Autumn 2012
Patrick Dies with Equanimity
As his lungs failed, [Patrick Mettes](entity:character-recall-character-patrick-mettes-0e564a5280f6) gathered family and friends in the hospital and said goodbye. His room became a place people wanted to linger, and [Tony Bossis](entity:character-recall-character-tony-bossis-4fe2986c2e91) later recalled Patrick consoling him rather than the other way around.
Lisa returned from a brief trip home to find that Patrick had died. She described his death as a good one and credited the trial with helping him draw on emotional resources that had been his own all along.
During the NYU cancer trial
Dinah Confronts Her Fear
[Dinah Bazer](entity:character-recall-character-dinah-bazer-8e155ef93688) entered her session with a fear of cancer recurrence that had dominated her life. With [Tony Bossis](entity:character-recall-character-tony-bossis-4fe2986c2e91) holding her hand, she pictured the fear as a black presence beneath her ribs and confronted it with anger, telling it to leave.
The fear disappeared during the session and did not return in the same way. Dinah remained an atheist, yet described the love she felt as being bathed in God’s love, showing how spiritual language could describe an experience without changing a person’s formal beliefs.
Beginning in 2009
The Smoking-Cessation Pilot
[Matthew Johnson](entity:character-recall-character-matthew-johnson-77e6349d7d3b) led a Johns Hopkins pilot study combining cognitive behavioral therapy with psilocybin sessions for smokers trying to quit. Participants prepared for the sessions and then used the drug as part of a structured attempt to change a deeply established habit.
At six months, 80 percent of the small group were confirmed abstinent; at one year, two-thirds remained smoke-free. The results were unusually strong for smoking cessation, though the study was open-label and required larger controlled trials.
After the Johns Hopkins smoking study
Bessant Quits Smoking
[Charles Bessant](entity:character-recall-character-charles-bessant-5a4e6981e0e1) described standing on a mountaintop during his session and seeing his life from a wider perspective. Smoking became small against the scale of what he had experienced, and he said it became irrelevant.
He remained abstinent for years and continued to notice beauty in ordinary light and leaves. His account showed how a familiar insight could acquire enough emotional force to support a lasting change in behavior.
During the smoking-cessation study
The Smokers’ Duh Moments
Other participants returned from elaborate journeys with strikingly ordinary conclusions. [Alice O’Donnell](entity:character-recall-character-alice-o-donnell-6daecd1503bf) decided that breath was precious; [Savannah Miller](entity:character-recall-character-savannah-miller-27adcf32ebaa) pictured herself as a coughing gargoyle and announced that people should eat well, exercise, and stretch.
[Matthew Johnson](entity:character-recall-character-matthew-johnson-77e6349d7d3b) called these “duh moments,” arguing that the drug made familiar knowledge emotionally compelling and harder to ignore. The treatment seemed to work not by supplying new facts, but by changing the scale and meaning of an old habit.
During Michael Pollan’s reporting on addiction
The Awe Hypothesis
[Peter Hendricks](entity:character-recall-character-peter-hendricks-e8e72045c8a2) suggested that awe might help explain why psychedelic experiences could loosen addictive behavior. An experience of something larger than the self could redirect attention away from immediate self-interest and toward family, community, or nature.
Experiments associated with [Dacher Keltner](entity:character-recall-character-dacher-keltner-ca008fb3436d) found that even modest experiences of awe could increase helpful behavior. This offered a psychological link between mystical experience, a “small self,” and the renewed connections many patients described.
During the University of New Mexico alcohol study
McDaniels Finds Self-Acceptance
[Terry McDaniels](entity:character-recall-character-terry-mcdaniels-43176b54b0d8) entered a psilocybin study after years of drinking, trauma, and unsuccessful attempts at sobriety. Her session began with grief about the life her children had not had, then shifted to an image of Jesus comforting her like a small child.
She emerged with greater self-acceptance and began reading the Bible regularly, but she did not become fully abstinent; a later brief binge represented progress compared with her earlier drinking. Her story complicated the neat success narratives often favored in research.
During Michael Pollan’s reporting on addiction
The Rat Park Lesson
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) learned of experiments in which isolated rats readily consumed drugs, while rats living in enriched environments with play, company, and nature often did not. The contrast suggested that addiction might depend partly on a person’s history and surroundings, not only on biology or chemistry.
Researchers proposed that psychedelic therapy might enrich a person’s inner environment by opening new ways to experience the past and present. The comparison reinforced the idea that changed perspective could matter even when external circumstances remained difficult.
After the rat-park and treatment interviews
Awe Redirects the Addict
The experiences reported by Apollo astronauts and psychedelic volunteers shared a sense of awe and of seeing the self as part of a larger whole. For addicts, that shift could weaken the narrow self-interest organized around a substance and renew a sense of responsibility to others.
The theory did not establish whether awe was the cause or consequence of the change. It did, however, help connect mystical experience, social connection, and the possibility of altering entrenched behavior.
2016
A New Psilocybin Depression Trial
Encouraged by the Imperial pilot study, regulators asked researchers to test psilocybin for depression in broader patient populations. The request widened the field’s aims beyond the distress of cancer patients and toward a condition affecting millions.
Researchers had to confront familiar limitations: small samples, difficulty blinding participants, and the unusually important role of preparation and therapeutic support. Still, the regulatory response marked a striking change from the earlier era of prohibition.
April 2017
Psychedelic Science Returns
The [Psychedelic](entity:expression-recall-expression-psychedelic-48710543d97e) Science conference in [Oakland](entity:location-recall-location-oakland-479b7c0dace1) brought researchers, guides, advocates, psychonauts, and entrepreneurs together in a gathering far larger and more respectable than earlier meetings. Former leaders of psychiatry and mental-health research appeared on a prominent panel discussing psychedelic treatment.
[Tom Insel](entity:character-recall-character-tom-insel-819a14cf6d1a) urged the field not to neglect safety, rigor, or its reputation. The conference represented a cultural milestone, but its celebratory mood came with a warning that one irresponsible episode could provoke another backlash.
After the 2017 Psychedelic Science conference
The Medicalization Debate
Researchers and advocates disagreed about whether psychedelics should be confined to clinical treatment or made available through broader spiritual and community settings. [Bob Jesse](entity:character-recall-character-bob-jesse-c42badf9e66f) worried that medicalization could narrow the purpose of these substances, while others envisioned treatment centers, psychedelic hospices, or guided experiences for healthy people.
The debate revived the old tension between institutional control and direct personal revelation. [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) hoped for wider access, but concluded that experienced guides and safe settings mattered, especially when a journey became frightening.
After the first three journeys
Pollan Takes Ayahuasca
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) joined a group of women for an ayahuasca ceremony led by an experienced guide in the lineage of [Leo Zeff](entity:character-recall-character-leo-zeff-92a9d678b5b8). The ceremony included singing, prayers, bells, and invocations of “the grandmother”; an uncomfortable eye mask became the first image of the journey.
He felt the brew moving through his body and imagined it as a vine climbing toward his head. The group ceremony offered a social setting unlike his earlier one-on-one sessions, while retaining a similar mixture of apprehension, ritual, and letting go.
During the ayahuasca ceremony
The Vine Escapes the Cage
[Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) imagined black bars forming a cage around his head and body. As panic rose, a green vine grew upward through the bars and reached toward the light; he suddenly thought that plants could not be caged as animals could.
He could not be certain that the image had only one meaning. The vine might have offered a strategy for changing the conditions of an obstacle, or it might have led him to realize that plants possessed agency and intelligence. Either way, the image deepened a belief he had previously held only intellectually, but had never felt so vividly.
The book’s final reflections
Pollan Reconsiders Consciousness
The image of the escaping vine reminded [Michael Pollan](entity:character-recall-character-michael-pollan-db1809ddb465) of an earlier feeling: plants seemed to be looking back at him. He became less certain that only human brains possessed subjectivity, though he remained cautious about the idea that matter itself or the universe itself might be conscious.
He ended the book without solving the mystery or choosing between materialist and spiritual explanations. What he could say was that consciousness seemed broader than he had believed when he began his inquiry, and the world seemed more alive.