Timothy Leary (1920–1996) American psychologist
Attributed to Leary by Terence McKenna in one of his talks ( "The World and Its Double" https://terencemckenna.wikispaces.com/The+World+And+Its+Double, 11 September 1993, Nature Friends Lodge, Sierra Madre, CA), though he also stated[citation needed] Leary denied ever having said it. <br class="br">Misattributed