You probably know the story of Richard Alpert in India=
Harvard Professor, colleague of Timothy Leary, looking for enlightenment by taking LSD, goes to India, finds a guru, gives him LSD to see what the reaction would be……. nothing!
Alpert came home, gave up drugs completely and is now known as Ram Dass; but this is the first time I have seen it in his own words-
Full link and playlist is here