Timothy Leary (1920-1996) was a psychologist, author and pioneer of psychedelic drugs. While working as a professor at Harvard, he explored the potential benefits of psilocybin, the active ingredient in magic mushrooms. His later experiments with LSD made him a key figure and hero during the counter-culture movement of the 1960s.

– I’d never heard of Leary before a reader (thanks Denver) sent me this quote.
– There’s lot of his interviews on YouTube (like this great one) and I also found this BBC documentary on him if you’re interested in finding out more.