The Psychedelic Experience: A Manual Based on The Tibetan Book of the Dead. Timothy Leary, Ralph Metzner, and Richard Alpert. Penguin Books. ISBN: 978-0141189635
The authors process the concepts of death and rebirth presented in Tibetan Book of the Dead as a metaphor for the experience of ego death or depersonalization that is commonly experienced under the influence of psychedelic drugs. The book also describes broadening spiritual consciousness through a combination of Tibetan meditation techniques and psychotropic substances.
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