Former students of Francis MacDonald Cornford report that the distinguished Cambridge historian was fond of what he called his “parable of the coins.” The point of the parable’s instruction was that words, especially philosophers’ words, are like coins in that they retain their “shape” or visual appearance over decades and even centuries while their “purchasing power” or meaning may be shifting drastically. The image of a coin with an enduring shape but a varying purchasing power is especially appropriate for the (...) semantic career of one of the most important of Greek philosophical words, psyche, traditionally rendered “soul.” Visually, psyche retained its shape from the earliest Greek literature known to us, which is of course Homer, down to the age of the koine spoken in the time of Christ and later used to record the gospels. That was a period of a thousand years of varied and often intense philosophical and religious exploration and development; in those centuries, the meaning of psyche, unlike its shape, was far from static. (shrink)