James Fadiman is known as the author of The Psychedelic Explorer’s Guide and as one of America's most well-known proponents of microdosing.

While a Harvard undergrad, he was the "teacher's pet" of Ram Dass, then known as Richard Alpert; as a graduate student at Stanford University, he became a research assistant at Myron Stolaroff's famed International Foundation for Advanced Study, an early non-profit situated in Menlo Park that guided the uninitatited into the psychedelic experience and studied the outcomes.

Fadiman was also one of the first teachers at the Esalen Institute, beginning in the fall of 1962 with the workshop "The Expanding Vision," co-taught with Willis Harman. He has continued a lifelong association with Esalen and with psychedelics, and has appeared in countless films as an authority on such matters, including 2013’s "Science and Sacraments" and 2009’s "Inside LSD."

Other books authored by Fadiman include Be Love Now, Essential Sufism, and The Other Side of Haight. Together we explored microdosing, the mystical experience, the human potential movement, his friendship with the Merry Pranksters, and more.