"PIHKAL is a compelling novel. Given the autobiographical nature of the story, the subject matter -- psychedelic biochemistry and sexual chemistry -- is daring indeed. PIHKAL is materially long but experientially short, no doubt due to the brisk and vivid writing."
-- Marilyn Ferguson, author of The Aquarian Conspiracy and founder of the Brain/Mind Bulletin

"PIHKAL is science at its best; the pursuit of SCIENTAS or 'knowing', in the face of the darkness of unknowing. A monumental work, important for an understanding of the modern search for spiritual enlightenment . . . and that quest to gain insight into the divine which is in the heart of every man and woman."
-- Brad Lenz, PH.D., Research Fellow in the History of Pharmacy, University of Wisconsin, Madison

"This courageous and compelling book ... provides a marvelous glimpse of altered states of consciousness and a unique opportunity to become acquainted with two exceptional lovers and fearless psychonauts. If phenethylamines become as important in the future as I believe they will, this book will be seen as a treasure trove of historic importance."
-- Lester Grinspoon, M.D., Professor of Psychiatry, Harvard University

"There has never been a book like PIHKAL, and . . . we may not soon see another of its kind. No library of psychedelic literature will henceforth be complete without it. Some day in the future, when it may again be acceptable to use chemical tools to study the mind, this book will be a treasure-house, a sort of sorcerer's book of spells, to delight and enchant the psychiatrist / shaman of tomorrow."
-- Dave Nichols, Ph.D., Professor of Medicinal Chemistry, Purdue University