To know what virtue is is not enough; we must endeavor to possess and to practice it, or in some other manner actually ourselves to become good.

[the virtues] cannot exist without Prudence. A proof of this is that everyone, even at the present day, in defining Virtue, after saying what disposition it is [i.e. moral virtue] and specifying the things with which it is concerned, adds that it is a disposition determined by the right principle; and the right principle is the principle determined by Prudence.

He overcomes a stout enemy who overcomes his own anger.

Excellence is an art won by training and habituation. We do not act rightly because we have virtue or excellence, but we rather have those because we have acted rightly. We are what we repeatedly do. Excellence, then, is not an act but a habit.

Most people would rather give than get affection.

We become just by the practice of just actions, self-controlled by exercising self-control, and courageous by performing acts of courage.

Nature operates in the shortest way possible.