[45] Moreover, as among cities, some being governed by an oligarchy or by tyrants, endure slavery, having those who have subdued them and made themselves masters of them for severe and cruel tyrants; while others, existing under the superintending care of the laws and under those good protectors, are free and happy. So also in the case of men; those who are under the dominion of anger, or appetite, or any other passion, or of treacherous wickedness, are in every respect slaves; and those who live in accordance with law are free.