Humphry Osmond

Humphry Osmond was a British-born psychiatrist who, while researching mescaline and the biochemistry of schizophrenia in Saskatchewan, supervised Aldous Huxley’s first mescaline experience in 1953.

In a 1957 exchange of rhyming couplets with Huxley, Osmond proposed the term “psychedelic”—mind-manifesting—which displaced the more clinical “psychotomimetic” and gave the field its enduring name and its more hopeful framing.

He and colleagues also pioneered using LSD to treat alcoholism with notable early success. Osmond’s contribution to the mind-power lineage is foundational and often underappreciated. By naming the experience “mind-manifesting” rather than “psychosis-mimicking,” he reframed altered states as revelatory rather than pathological—the conceptual hinge on which Huxley’s reducing-valve mysticism and the entire consciousness-expansion movement turn.

His clinical emphasis on the patient’s mindset and surroundings also helped formalize the set-and-setting principle that Leary popularized and that remains central to psychedelic therapy today, anchoring the idea that inner expectation shapes experienced reality.