8. Richard Feynman
A theoretical physicist known for things that would be too difficult to describe here, he received the joint Nobel Prize in 1965 and assisted in the development of the atomic bomb.
Feynman was exposed to marijuana and LSD in the context of John Lilly’s sensory deprivation tanks, and his open acknowledgment of his drug use brought him much praise and criticism from the scientific community in the ’50s and ’60s.
