Baltimore is more than a backdrop in the account of the Johns Hopkins psychedelic research program: it is where Michael Pollan’s conversations with Roland Griffiths bring the project’s scientific ambitions, spiritual implications, and unresolved disagreements into view. The city’s domestic and public settings frame a larger institutional change, as Hopkins became a major center for the study of mystical states of consciousness.

Setting and research landscape

The account places Griffiths’s work within Baltimore’s Johns Hopkins community and its surrounding neighborhoods. By the time Pollan visited the university in 2015, roughly twenty people were working on psychedelic studies there. The book presents that scale of institutional support as exceptional: since the earlier work at Spring Grove, psychedelic research had not received such strong backing, and no institution with Hopkins’s reputation had devoted so many resources to studying mystical states.

The program’s significance rested partly on the possibility of studying such experiences prospectively. Griffiths argued that researchers could reliably occasion experiences that a large proportion of participants would later describe as among the most meaningful of their lives. The 2006 study had, in his view, made mystical experience a subject for systematic scientific investigation rather than leaving it solely to religious testimony or retrospective interpretation.

Conversations across the city

Pollan’s Baltimore encounters with Griffiths unfold in distinct settings. During a leisurely Sunday brunch at the modern art museum, Richard Boothby spoke with conspicuous enthusiasm about the experiences he had glimpsed at Hopkins, while regarding Pollan as someone who had not yet encountered them firsthand. The scene captures how the research affected not only volunteers but also people who witnessed their sessions: some sitters, including Katherine MacLean, described changes in their own outlook after guiding participants through psilocybin experiences.

At breakfast on the sunporch of Griffiths’s modest ranch house in suburban Baltimore, the conversation turned to a colleague at Hopkins, the psychiatrist Paul McHugh. McHugh had characterized psychedelic experience as toxic delirium, comparing its vivid perceptions, altered sensations, disorientation, and changing emotions to symptoms clinicians encounter in serious illness. Griffiths conceded that temporary psychosis was a possibility worth examining and planned to test for delirium, but doubted that the diagnosis accounted for participants’ reports of experiences that remained meaningful months later.

A later dinner at a bistro in Griffiths’s Baltimore neighborhood brought the debate from clinical interpretation to the broader relationship between science and spirituality. Pollan raised E. O. Wilson’s claim that people must ultimately choose between the two. Griffiths rejected that stark opposition: he hoped scientific and spiritual ways of knowing could inform and correct one another while helping people approach large existential questions. Pollan read him a letter from Huston Smith, who had taken part in Walter Pahnke’s Good Friday Experiment. Smith argued that controlled psilocybin research offered evidence for genuine mystical experience and might help restore a sense of the sacred without relying on religious authority or abandoning science.

A local debate with wider consequences

The Baltimore conversations reveal that the Hopkins project did not produce a single settled interpretation of its findings. Griffiths remained open to the possibility that volunteers’ reports of a transcendent reality might or might not be true, and treated that uncertainty as a reason for inquiry. His stance differed both from McHugh’s reduction of the experience to delirium and from claims that science and spirituality must be kept apart. The city’s scenes of interview and discussion thus locate the research within an active argument over what its evidence can establish.

Griffiths also described a change in his own relationship to the work. After a period in which meditation had left him feeling disconnected from his professional life and considering leaving it, he felt newly engaged, integrating his research with questions of well-being, compassion, love, and existential meaning. His commitment had begun in 1998, when he chose to devote his career to psychedelics and mystical experience. A month before one of Pollan’s breakfasts, he received the Eddy Award from the College on Problems of Drug Dependence; his nominators cited his psychedelic research as a major contribution. Baltimore therefore marks both the intimate setting of his reflections and the institutional home of a research program whose reach was growing.

Narrative significance

The book makes Baltimore a meeting point between private testimony and public science. A museum brunch, a researcher’s sunporch, and a neighborhood bistro are not interchangeable settings: each hosts a different aspect of the inquiry, from the personal force of witnessed experiences to clinical skepticism and the contested relation between scientific and spiritual knowledge. Set against Hopkins’s growing research capacity, these conversations give the city a distinctive narrative role—as the place where claims about mystical experience are tested, challenged, and kept open for further investigation.