1. Becker, Lawrence. 1998.A New Stoicism. Princeton: Princeton University Press.
2. Brown, Kirk Warren, and Richard M. Ryan. 2003. “The Benefits of Being Present: Mindfulness and Its Role in Psychological Well-Being.”Journal of Personality and Social Psychology 84: 822–848.
3. Conze, Edward, trans. 1959.Buddhist Scriptures. New York: Penguin, 1959.
4. Graham, A. C., trans. 2001.Chuang-Tzu: The Inner Chapters. Indianapolis: Hackett.
5. Long, A. A., and D. N. Sedley, eds. and trans. 1987.The Hellenistic Philosophers, v. 1. Translations of the Principal Sources with Philosophical Commentary. Cambridge: Cambridge University Press.