Today we revisit a 1971 talk by Dr. John C. Lilly: physician, neuroscientist, tireless psychonaut, and one of the most audacious explorers of consciousness in the twentieth century.

John Lilly was a frequent teacher at Esalen and a close friend of Esalen co-founder Dick Price. He begins teaching at Esalen as early as 1968, focusing on what he called the human biocomputer and lecturing in part on “isolation, solitude, and confinement experiments.”

Lilly is widely known for three things; first, he invented the first isolation tank — a dark and silent vessel filled with a saline solution that is meant to suspend the body and expose the mind to itself. He made his first one in 1954. Second, Lilly was convinced of the possibility of interspecies communication, notably between dolphins and homo sapiens. And finally, Lilly was an early experimenter with ketamine, from a psychedelic point of view, an interest that ultimately led to an addiction which drove him quite mad.

However, during this talk from 1971, he is in great form, speaking about the concept and practice of Satori: the instantaneous awakening, the shock of direct perception.