Timothy Leary (Wikiquote)Timothy Francis Leary (22 October 1920 – 31 May 1996) was an American writer, psychologist, campaigner for psychedelic drug research and use, 1960s counterculture icon and computer software designer. He is most famous as a proponent of the therapeutic and spiritual benefits of LSD. During the 1960s, he coined and popularized the catch phrase “Turn on, tune in, drop out.”