Timothy Leary

Timothy Francis Leary was an American psychologist and writer known for advocating the exploration of the therapeutic potential of psychedelic drugs under controlled conditions. Leary conducted experiments under the Harvard Psilocybin Project during American legality of LSD and psilocybin, resulting in the Concord Prison Experiment and the Marsh Chapel Experiment.

Leary's colleague, Richard Alpert, was fired from Harvard University on May 27, 1963 for giving psilocybin to an undergraduate student. Leary was planning to leave Harvard when his teaching contract expired in June, the following month. He was fired, for "failure to keep classroom appointments", with his pay docked on April 30. (Wikipedia)