1. Republic, II:382, translated by B. Jowett. The dialogues of Plato,1937
2. Nichomachean ethics, iv:4.93, translated by T. Irwin,1985
3. Lying. Moral choice in public and private life;Bok,1999
4. The efficacy of personal ethics;Baker;Hastings Cent Rep,2000
5. Council on Ethical, and Judicial Affairs, American Medical Association. Code of medical ethics: current opinions with annotations, 2000–2001 edition. Chicago: American Medical Association, 2000:xiv.