I also found Arthur Koestler’s account of synchronicity in Janus helpful. Koestler traces the idea of unity-in-diversity all the way back to the Pythagorean harmony of the spheres and the Hippocratics’ “sympathy of all things”—“There is one common flow, one common breathing, all things are in sympathy.” The doctrine that everything in the universe hangs together also runs as a leitmotif through the teachings of Taoism, Buddhism, the Neo-Platonists, and the philosophers of the early Renaissance. Koestler concluded that “telepathy, clairvoyance, precognition … and synchronicity are merely
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