Turn on, tune in, drop out New York City on September 19, 1966. It urged people to embrace cultural changes through the use of psychedelics by detaching themselves from the existing conventions and hierarchies in society. It was also the motto of his League for Spiritual Discovery. The phrase was derided by more conservative critics. In his speech, Leary said: Leary later explained in his 1983 autobiography "Flashbacks": "Turn on, tune in, drop out" is also the title of a book () of essays by Timothy Leary, covering topics ranging from religion, education, and politics to Aldous Huxley, neurology, and psychedelic drugs. Leary later (during the
Turn on, tune in, drop out in one of the lines. Gil Scott-Heron criticised the concept in his 1970 poem and song "The Revolution Will Not Be Televised", with the line "You will not be able to plug in, turn on and ". The lyrics, "Turn on, tune in, drop out" are included verbatim in several songs: The "" episode title "Turn On, Tune In, Drop Dead" also parodies the quote, with the episode focusing on how two victims who are supposedly dead get up and walk away. A variation of the quote ("Tune in, Turn on, Talknet") was used in the 1980s and early 1990s