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" Confucius and Lao-Tse were living in China, all the schools of Chinese philosophy came into being, including those of Mo Ti, Chuang Tse, Lieh Tzu and a host of others; India produced the Upanishads and Buddha and, like China, ran the whole gamut of philosophical possibilities down to materialism, scepticism and nihilism; in Iran, Zarathustra taught a challenging view of the world as a struggle between good and evil; in Palestine the prophets made their appearance from Elijah by way of Isaiah and Jeremiah to Deutero-Isaiah; Greece witnessed the appearance of Homer, of the philosophers—Parmenides, Heraclitus and Plato,—of the tragedians, of Thucydides and Archimedes. Everything implied by these names developed during these few centuries almost simultaneously in China, India and the West. "
― Karl Jaspers ,