#5 Richard Feynman: Marijuana and LSD

Richard Feynman was an American theoretical physicist known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, and the physics of the superfluidity of supercooled liquid helium, as well as in particle physics (he proposed the parton model). For his contributions to the development of quantum electrodynamics, Feynman, jointly with Julian Schwinger and Sin-Itiro Tomonaga, received the Nobel Prize in Physics in 1965.

Feynman had an early interest in the phenomenon of hallucination, which he touches on in his book "Surely You're Joking, Mr. Feynman." He often explored this interest sober, plunging himself into pitch-black isolation tanks until stimulation-starved senses started manufacturing their own effects. This could take some time. “As you might assume, it took a lot less time with help from weed and acid,” he said.

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