ne modern psychology.
For Aristotle, the soul expresses "the form of a natural body having life potentially within it" (Leahey, 2000, 84). Unlike later thinkers, however, Aristotle thought that all living things had souls that were their fundamental form and defined their nature. His concept is of soul as both being/becoming, potential and actualization, as essential and final cause of each organism. We are who and what we are because of our souls. To study human psychology, then, is to study our souls and to discern what the essen
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