What is a good man, and how does he become good? My aim in this paper is to unravel and to assess Plato's and St. Paul's very different answers to these questions. The pivotal texts are the Republic and Paul's Epistles.
A good man, according to Plato, is a man who is dikaios (righteous, just), temperate, wise, and courageous. A just man is one each one of the three parts (elements, components) of whose soul is doing its own [work, ergon]. We must pause a moment at the crucial passage in 441 DE. Cornford's translation of it is somewhat ambiguous. “ ... each one of us likewise will be a just person, fulfilling his proper function, only if the several parts of our nature fulfil theirs.” According to this rendition Plato may be construed to be saying that a human being is doing his own work as a just person only if each part of his inner nature (=soul) is doing its own work.