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.

Those that know, do. Those that understand, teach.

The gods too are fond of a joke.

Humor is the only test of gravity, and gravity of humor; for a subject which will not bear raillery is suspicious, and a jest which will not bear serious examination is false wit.

All paid jobs absorb and degrade the mind.

It is the mark of an educated mind to be able to entertain a thought without accepting it.

Happiness is a state of activity.