De Anima (Barnes & Noble Digital Library)

This edition includes a modern introduction and a list of suggested further reading.  In De Anima, Aristotle seeks to uncover what separates the living from the dead. He steers a course between two extremes, with all of reality as nothing more than atoms on one side and the mind as independent from the body on the other side. Ultimately, he invents a third kind of position that views mental phenomena to be thoroughly dependent on, though not reducible to, physical events.