The psychedelic drug LSD has had a long, flamboyant history, including its promotion by former Harvard psychologist Timothy Leary in the 1960s. He envisioned LSD as a way to “become sensitive to the many and various levels of consciousness” and embrace personal and cultural change.
Leary later lamented that his call to “turn on, tune in, drop out” was too often misinterpreted as “get stoned and abandon all constructive activity,” rather than as an aid to transformative change.
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