Definition
Timothy Leary (1920-1996) was a controversial American psychologist and writer. He became famous for his experiments with psychedelic drugs like LSD and psilocybin. Leary believed these substances could unlock higher states of consciousness. His famous catchphrase, "Turn on, tune in, drop out," summarized his philosophy. He advocated for the use of psychedelics for self-discovery and personal growth. He remains a significant, though debated, figure in counterculture history.