Knowing as he does (or at least as he can know, if he so desires) what are the chemical conditions of transcendental experience, the aspiring mystic should turn for technical help to the specialists—in pharmacology, in biochemistry, in physiology and neurology, in psychology and psychiatry, and parapsychology. And on their part, of course, the specialists (if any of them aspire to be genuine men of science and complete human beings) should turn, out of their respective pigeonholes, to the artist, the sibyl, the visionary, the mystic—all those, in a word, who have had experience of the Other
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