Timothy Francis Leary (October 22, 1920 – May 31, 1996) was an American psychologist and author known for his strong advocacy of psychedelic drugs.[2] 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".[3] During the 1960s and 1970s, Leary was arrested 36 times.[4] President Richard Nixon called him "the most dangerous man in America".[5]