13b
For this reason those who marry ought not to look to family, whether the parties come from noble stock, nor to wealth, whether some possess great riches, nor to bodies, whether they have handsome ones. For neither wealth nor beauty nor high birth is by nature able to increase the partnership, any more than concord; nor again do these things make the bearing of children better. But for marriage those bodies are adequate that are healthy, of ordinary appearance, and capable of doing their own work—such bodies, indeed, as would be less exposed to the designs of the licentious, and would perform better whatever tasks belong to the body, and would bear children without deficiency. As for souls, we must consider most suitable those best endowed by nature for self-control and justice, and in general for virtue. For what marriage is fine without concord? What partnership is good? And how could human beings be in concord with one another when they are wicked? Or how could a good person be in concord with a wicked one? No more than one could fit a crooked piece of wood to a straight one, or fit together two that are both crooked. For what is crooked is out of harmony both with what is like it, namely the crooked, and still more with its opposite, the straight. And so the wicked person is neither a friend to the wicked nor in concord with him, and much less so with the good.