Meanwhile, Greek philosophy suggested that what made man unique was his ability to use reason. Human beings, the Greeks believed, were not innately malleable or changeable. We were crafted by nature to use our minds; it was that capacity that separated us from the animals. Plato asserted that the purpose of the human soul was “managing, ruling, and deliberating.”6 Aristotle suggested that “the work of a human being is an activity of soul in accord with reason.”7
