This interest in mysticism helped shape the emerging research and popular conversation around psychedelics in the 1960s. In 1964 William S. Burroughs drew a distinction between "sedative" and "conscious-expanding" drugs. In the 1940s and 1950s the use of LSD was restricted to military and psychiatric researchers. One of those researchers was Timothy Leary, a clinical psychologist who first encountered psychedelic drugs while on vacation in 1960, and started to research the effects of psilocybin in 1961. He sought advice from Aldous Huxley, who advised him to propagate psychedelic drugs among society's elites, including artists and intellectuals. On insistence of Allen Ginsberg, Leary, together with his younger colleague Richard Alpert (Ram Dass) also made LSD available to students. In 1962 Leary was fired, and Harvard's psychedelic research program was shut down. In 1962 Leary founded the "Castalia Foundation", and in 1963 he and his colleagues founded the journal "The Psychedelic Review".