Ralph Metzner, veteran (with Ram Dass and Timothy Leary, among others) of the experimentation with mind-altering substances at Harvard, speaks about his experiences in those early days, as chronicled in his new book, Birth of a Psychedelic Culture: Conversations about the Harvard Experiments, Leary, Millbrook and the Sixties (Synergetic Press). Ram Dass and Gary Bravo are co-authors. Co-founder of the Green Earth Foundation, Ralph Metzner also practices psychotherapy and is professor emeritus at the California Institute of Integral Studies. His many books include Alchemical Divination and MindSpace and TimeStream.