use it in order to develop a claim about human perfection from an observation from what is distinctive about man. But the exact role of the function argument in Aristotle's ethical theory is itself a matter of dispute. As listed in the Corpus Aristotelicum References Further reading Studies Translations . Re-issued 1980, revised by J. L. Ackrill and J. O. Urmson. . Re-issued 1976, revised by Hugh Tredennick. External links Joe Sachs, Aristotle: Ethics in the Internet Encyclopedia of Philosophy. Aristotle's Ethics at Project Gutenberg. Bibliography on Aristotelian Ethics maintained at the Centre for Contemporary Aristotelian Studies in Ethics and Politics, London Metropolitan University. Ethics Virtue Virtue ethics