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The New Alchemy, published in 1958, was Alan Watts' seminal work on psychedelics. Watts, a philosopher and writer, explored the potential of these substances for personal growth and spiritual exploration. The book argued that psychedelics could facilitate a deeper understanding of the self, the world, and the nature of reality. Watts believed that psychedelics could be used as tools for personal transformation and for fostering a greater sense of interconnectedness.