Timothy Francis Leary (October 22, 1920 – May 31, 1996) was an American psychologist and writer, known for his advocacy of psychedelic drugs. During a time when drugs like LSD and psilocybin were legal, Leary conducted experiments at Harvard University under the Harvard Psilocybin Project, resulting in the Concord Prison Experiment and the Marsh Chapel Experiment. Both studies produced useful data, but Leary and his associate Richard Alpert were fired from the university.
Leary argued that psychedelic substances, used at proper dosages, in a stable set and setting could, under the guidance of psychologists, alter behavior in beneficial ways not easily attainable through regular therapy. Leary’s research focused on treating alcoholism and reforming criminals. Many of Leary’s research participants reported profound mystical and spiritual experiences, which they claim permanently altered their lives in a very positive manner. According to Leary’s autobiography, Flashbacks, LSD was given to 300 professors, graduate students, writers and philosophers and 75 percent of the test subjects reported the experience as one of the most educational and revealing experiences of their lives.
During the 1960s and 1970s, Leary was arrested regularly and was held captive in 29 different prisons throughout the world. President Richard Nixon once described Leary as “the most dangerous man in America”. +
