A friend is a second self.

These virtues are formed in man by his doing the actions ... The good of man is a working of the soul in the way of excellence in a complete life.

Happiness is a quality of the soul...not a function of one's material circumstances.

All three states - the Lacedaemonian, the Cretan, and the Carthaginian - nearly resemble one another, and are very different from any others. Many of the Carthaginian institutions are excellent. The superiority of their constitution is proved by the fact that the common people remains loyal to the constitution; the Carthaginians have never had any rebellion worth speaking of, and have never been under the rule of a tyrant.

It is of itself that the divine thought thinks (since it is the most excellent of things), and its thinking is a thinking on thinking.

Laughter is a bodily exercise, precious to Health

For though we love both the truth and our friends, piety requires us to honor the truth first.