Telepathy

Telepathy in the book develops from a means of direct communication into the organizing principle of a new kind of mind. Among the Sixteenth Men it helps eliminate selfishness by increasing mutual understanding; among the Eighteenth Men it becomes the basis for a group-mind whose experience exceeds that of its members separately. Its eventual unreliability, as the species’ neural organization deteriorates, makes the loss of a shared mental life one of the clearest measures of humanity’s final decline.

Communication and the preservation of thought

For the Sixteenth Men, telepathy was achieved through newly synthesized molecular groups similar in type to the Martian Subvital Units, which had long since become extinct. The resulting rapport, combined with improved coordination of the nervous system, greatly increased mutual understanding. The account links this change to a profound social consequence: selfish impulses that could not be subordinated came to be regarded as symptoms of insanity, and selfishness was described as finally abolished from normal human beings. Telepathy here is not merely a convenient channel for messages. It alters the conditions under which people understand one another and, with them, the expected terms of ordinary conduct.

In the later society, direct telepathic communication is available between any people on the planet, but it does not make durable records unnecessary. The Eighteenth Men have no books in the familiar form. Instead, each room contains a cupboard of minute, microscopically figured tape rolls. A roll, inserted into a pocket instrument about the size and shape of an ancient cigarette case, reels out at a chosen speed. The instrument interferes systematically with ethereal vibrations, producing a complex flow of telepathic language that permeates the reader’s brain. The medium is presented as unusually precise: it leaves little room for misunderstanding an author’s intention.

The process of making these records distinguishes deliberate expression from the unfiltered flow of thought. A separate instrument responds to vibrations generated in an author’s brain, but it does not simply reproduce the author’s stream of consciousness. It records the images and ideas the author intentionally inscribes. Since people can communicate directly at any time, these telepathic books are not used to publish passing thoughts. Each preserves what the account calls the chosen harvest of a mind: material selected to endure rather than ephemeral communication. Telepathy therefore serves both immediacy and preservation, while the recorded form depends on an act of selection.

From communication to group-mind

The Eighteenth Men’s designers sought a mentality beyond what an individual human brain could safely support. They therefore planned a system in which distinct, specialized brains could become nodes in a radiational unity, with the united system serving as the physical basis of a single mind. Telepathic communication among many individuals had existed before, but it had not, in itself, produced a super-individual or group-mind. The account recalls that such unity had previously been attained only on Mars, where the Martian Collective Consciousness had failed to surpass the minds of its constituent Martians.

The designers’ alternative was to make a small multi-sexual group the foundation of the super-individual. The group’s mental unity does not arise directly from sexual intercourse. Rather, the intimacy, temperamental harmony, and complementarity fostered within groups are described as conditions that make higher experience possible. Groups differ considerably in their patterns of union, but the underlying point is social: telepathy’s most advanced function depends not simply on contact between separate minds, but on relationships and differences that can be brought into coordination.

Each member of a group has a special organ in the brain. By itself, the organ is useless; in telepathic cooperation with the corresponding organs of other members, it contributes to a single electromagnetic system. The account specifies that all ninety-six organs must operate simultaneously for the group to attain unified mental life. This system does more than let each person share what the others experience. The Eighteenth Men already possess a general sensitivity to radiation in their brain tissue; the specialized organs instead make possible a group-mind with experience beyond the range of individuals in isolation.

That emergence depends on differentiated capacities. The sub-sexes have distinct forms and functions, as well as temperaments that differ across a wider range than the temperamental types recognized among the First Men. Those differences are not treated as noise to be eliminated. They contribute to the group self, giving the collective mind resources that no isolated individual—and, the account argues, no First Men equipped only with telepathic communication and electromagnetic unity—could have provided. Telepathy thus joins minds without making them interchangeable: specialized difference is part of the mechanism by which a new unity becomes possible.

Breakdown and significance

The final account of the Eighteenth Men shows how dependent this achievement remains on its biological basis. Under the effects of extraordinary stellar radiation, the specialized tissues that support higher mental functions break down. The racial mind vanishes, and the sexual groups lose their mental unity. Three sub-sexes have already been lost through chemical derangement; ordinary telepathic communication has become so unreliable that people must return to the archaic practice of vocal symbolism. What had once made direct understanding exceptionally effective can no longer be trusted as a common medium.

This reversal also clarifies that telepathy is not an immaterial escape from the body. Its forms rely on molecular organization, neural coordination, specialized brain organs, and a functioning system of radiation. When those foundations fail, the consequences extend beyond communication: the group-mind disappears, and the higher mental capacities associated with it are lost or disordered. Telepathy’s history therefore traces both a technological and a social possibility—the passage from communication between individuals to experience shared by a collective—and the fragility of that possibility when the organism that sustains it is damaged.