1. Aquinas, Thomas. 1994. Commentary on Aristotle’s De Anima. Notre Dame: Dumb Ox Books.
2. Aquinas, Thomas. 1995. Commentary on Aristotle’s Metaphysics. Notre Dame: Dumb Ox Books.
3. Aristotle. 1934. Nicomachean Ethics. Translated by H. Rackham. Cambridge: Harvard University Press.
4. Aristotle. 1957. Physics. Cambridge: Harvard University Press.
5. Aristotle. 2003. Metaphysics. Translated by Hugh Tredennick. Cambridge: Harvard University Press.