Now, the causes being four, it is the business of the student of nature to know about them all, and if he refers his problems back to all of them, he will assign the "why" in the way proper to his science-the matter, the form, the mover, that for the sake of which.

The more you know, the more you know you don't know.

Tragedy is an imitation not of men but of a life, an action

Equality consists in the same treatment of similar persons.

[Prudence] is the virtue of that part of the intellect [the calculative] to which it belongs; and . . . our choice of actions will not be right without Prudence any more than without Moral Virtue, since, while Moral Virtue enables us to achieve the end, Prudence makes us adopt the right means to the end.

A proper wife should be as obedient as a slave... The female is a female by virtue of a certain lack of qualities - a natural defectiveness.

A friend is another I.