A friend is a second self, so that our consciousness of a friend's existence...makes us more fully conscious of our own existence.

One swallow does not make a spring, nor does one fine day.

... the good for man is an activity of the soul in accordance with virtue, or if there are more kinds of virtue than one, in accordance with the best and most perfect kind.

We have no evidence as yet about mind or the power to think; it seems to be a widely different kind of soul, differing as what is eternal from what is perishable; it alone is capable of existence in isolation from all other psychic powers.

What the statesman is most anxious to produce is a certain moral character in his fellow citizens, namely a disposition to virtue and the performance of virtuous actions.

People never know each other until they have eaten a certain amount of salt together.

Reason is a light that God has kindled in the soul.