Timothy Francis Leary (October 22, 1920 – May 31, 1996) was an American psychologist and author known for his strong advocacy of psychedelic drugs. Evaluations of Leary are polarized, ranging from "bold oracle" to "publicity hound". According to poet Allen Ginsberg, he was "a hero of American consciousness", and writer Tom Robbins called him a "brave neuronaut". President Richard Nixon called him "the most dangerous man in America". During the 1960s and 1970s, at the height of the counterculture movement, Leary was arrested 36 times. "Turn on and Tune In"