A provocative and original history of the scientists and writers, artists and philosophers who took drugs to explore the hidden regions of the mind A New Yorker Best of the Week Pick "Jay is a leading expert on the history of Western drug use, and Psychonauts is the latest in a series of excellent studies in which he has investigated the roots of a kind of psychoactive exploration that we tend to associate with the nineteen-fifties and sixties."-Clare Bucknell, New Yorker "Ca...