1. Practical Reasoning About Final Ends. New York: Cambridge University Press, 1994
2. Facts and Values
3. The Examined Life. New York: Simon & Schuster, 1989
4. Nietzsche, Friedrich, Beyond Good and Evil. trans. R. J. Hollingdale. New York: Penguin Books, 1973
5. Harsanyi, John C., and Reinhard Selten, A General Theory of Equilibrium Selection in Games. Cambridge, Mass.: MIT Press, 1988