Timothy Leary died today of cancer at age 75. Leary was a Harvard psychology professor who began a series of controlled experiments with LSD and other psychedelic drugs in the early 1960's, exploring their use as a means of acheiving greater self-knowledge and awareness without the constraints of traditional medicine or religion. After his ouster from the college, Leary became a philosopher of the counterculture movement, popularizing the phrase, "tune in, turn on, and drop out."
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