Julian Jaynes

All this curious development of the sixth century B.C. is extremely important for psychology. For with this wrenching of psyche = life over to psyche = soul, there came other changes to balance it as the enormous inner tensions of a lexicon always do. The word soma had meant corpse or deadness, the opposite of psyche as livingness. So now, as psyche becomes soul, so soma remains as its opposite, becoming body. And dualism, the supposed separation of soul and body, has begun. But the matter does not stop there. In Pindar, Heraclitus, and others around 500 B.C., psyche and nous begin to coalesce. It is now the conscious subjective mind-space and its self that is opposed to the material body. Cults spring up about this new wonder-provoking division between psyche and soma. It both excites and seems to explain the new conscious experience, thus reinforcing its very existence. The conscious psyche is imprisoned in the body as in a tomb. It becomes an object of wide-eyed controversy. Where is it? And the locations in the body or outside it vary. What is it made of? Water (Thales), blood, air (Anaximenes), breath (Xenophanes), fire (Heraclitus), and so on, as the science of it all begins in a morass of pseudoquestions. So dualism, that central difficulty in this problem of consciousness, begins its huge haunted career through history, to be firmly set in the firmament of thought by Plato, moving through Gnosticism into the great religions, up through the arrogant assurances of Descartes to become one of the great spurious quandaries of modern psychology.