"He popularized catchphrases that promoted his philosophy, such as 'turn on, tune in, drop out', 'set and setting', and 'think for yourself and question authority'." --wikipedia. Social impact (public) and personal LoC (paid-subscriber access).
"American ethnobotanist, mystic, psychonaut, lecturer, author, and an advocate for the responsible use of naturally occurring psychedelic plants." --wikipedia. Social impact (public) and personal LoC (paid-subscriber access).
"a chemical substance that occurs in many plants and animals and which is both a derivative and a structural analog of tryptamine. It is used as a recreational psychedelic drug and prepared by various cultures for ritual purposes as an entheogen." wikipedia