1. Aristotle. 1993. Physics. Books III and IV. Translated by Edward Hussey. Oxford: Clarendon Press.
2. ———. 1996. Physics. Translated by Robin Waterfield. Oxford and New York. Oxford University Press.
3. Augustine of Hippo. 1961. Confessions. Translated by R.S. Pine-Coffin. London and New York: Penguin.
4. Barnes, Jonathan. 1999. Aristotle and Stoic Logic. In Topics in Stoic Philosophy, ed. Katerina Ierodiakonou, 23–53. Oxford: Clarendon Press.
5. Bergson, Henri. 1911 (1907). Creative Evolution. Translated by Arthur Mitchell. New York: Random House.