How to Change Your Mind: What the New Science of Psychedelics Teaches Us About Consciousness, Dying, Addiction, Depression, and Transcendence

I then read to him a letter from Huston Smith, the scholar of comparative religion who in 1962 had volunteered in Walter Pahnke’s Good Friday Experiment. It was written to Bob Jesse shortly after the publication of Griffiths’s landmark 2006 paper; Jesse had shared it with me. “The Johns Hopkins experiment shows—proves—that under controlled, experim

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that feeling of transparency we associate with ordinary consciousness may owe more to familiarity and habit than it does to verisimilitude. As a psychonaut acquaintance put it to me, “If it were possible to temporarily experience another person’s mental state, my guess is that it would feel more like a psychedelic state than a ‘normal’ state, becau

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“It was a good death,” Lisa told me, a fact she credits to the people at NYU and to Patrick’s psilocybin journey. “I feel indebted to them for what they allowed him to experience—the deep resources they allowed him to tap into. These were his own deep resources. That, I think, is what these mind-altering drugs do.” “Patrick was far more spiritual t

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In The Philosophical Baby, Gopnik draws a useful distinction between the “spotlight consciousness” of adults and the “lantern consciousness” of young children. The first mode gives adults the ability to narrowly focus attention on a goal. (In his own remarks, Carhart-Harris called this “ego consciousness” or “consciousness with a point.”) In the se

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Western science and modern drug testing depend on the ability to isolate a single variable, but it isn’t clear that the effects of a psychedelic drug can ever be isolated, whether from the context in which it is administered, the presence of the therapists involved, or the volunteer’s expectations. Any of these factors can muddy the waters of causa

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I asked her the question that gnawed at me whenever someone recounted such a mystical experience: “How can you be sure this was a genuine spiritual event and not just a drug experience?” “It’s an irrelevant question,” she replied coolly. “This was something being revealed to me.” There it was: the noetic sense William James had described as a mark

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It’s often said that in the 1960s psychedelics “escaped from the laboratory,” but it would probably be more accurate to say they were thrown over the laboratory wall, and never with as much loft or velocity as by Timothy Leary and Richard Alpert at the end of 1962. “We’re through playing the science game,” Leary told McClelland when he returned to

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Alison Gopnik and Robin Carhart-Harris come at the problem of consciousness from what seem like completely different directions and disciplines, but soon after they learned of each other’s work (I had e-mailed a PDF of Robin’s entropy paper to Alison and told him about her superb book, The Philosophical Baby), they struck up a conversation that has

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With Ken Kesey, the CIA had turned on exactly the wrong man. In what he aptly called “the revolt of the guinea pigs,” Kesey proceeded to organize with his band of Merry Pranksters a series of “Acid Tests” in which thousands of young people in the Bay Area were given LSD in an effort to change the mind of a generation. To the extent that Ken Kesey a

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Sigmund Freud wrote that “there is nothing of which we are more certain than the feeling of our self, our own ego.” Yet it is difficult to be quite so certain that anyone else possesses consciousness, much less other creatures, because there is no outward physical evidence that consciousness as we experience it exists. The thing of which we are mos

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