Angels are able to know and understand better than the human intellect can, precisely because such knowledge and understanding comes to them by way of ideas infused in them by God.

... The person who, at any stage of a conversation, disagrees, should at least hope to reach agreement in the end. He should be as much prepared to have his own mind changed as seek to change the mind of another ... No one who looks upon disagreement as an occasion for teaching another should forget that it is also an occasion for being taught.

Conjugal love, or the friendship of spouses, persists after sexual desires have weakened, withered, and disappeared.

Friendship is a very taxing and arduous form of leisure activity.

Love consists in giving without getting in return; in giving what is not owed, what is not due the other. That's why true love is never based, as associations for utility or pleasure are, on a fair exchange.

In Aristotelian terms, the good leader must have ethos, pathos and logos. The ethos is his moral character, the source of his ability to persuade. The pathos is his ability to touch feelings to move people emotionally. The logos is his ability to give solid reasons for an action, to move people intellectually.

I find the selectivity of erotic love - the choice of this man or this woman - much more intelligible if liking the person is the origin of sexual interest, rather than the other way.