Editor's note: After blind peer review, this paper was selected for reading at the University of Dayton's 10th annual Philosophy Colloquium, held Feb. 27-28, 1981.

The view that values and virtues, whether independently real or merely conventional, are no part of nature and are to be studied in a discipline distinct from sciences which investigate the natural world goes nearly unquestioned in our time. I shall argue that it is challenged by Plato in his criticism of Anaxagoras.



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