In 1965, Leary commented that he had "learned more about ... (his) brain and its possibilities ... more about psychology in the five hours after taking these mushrooms than ... in the preceding 15 years of studying and doing research in psychology."
To iskustvo tako drastično menja njegov život da on 1965. izjavljuje da je “naučio više o mozgu i njegovim mogućnostima za pet sati posle uzimanja gljiva nego za prethodnih petnaest godina studija i istraživanja iz psihologije”.