Therefore the good man ought to be a lover of self, since he will then both benefit himself by acting nobly and aid his fellows; but the bad man ought not to be a lover of self, since he will follow his base passions, and so injure both himself and his neighbors. With the bad man therefore, what he does is not in accord with what he ought to do, but the good man does what he ought, since intelligence always chooses for itself that which is best, and the good man obeys his intelligence.

It is the activity of the intellect that constitutes complete human happiness - provided it be granted a complete span of life, for nothing that belongs to happiness can be incomplete.

...happiness is an activity and a complete utilization of virtue, not conditionally but absolutely.

The body is most fully developed from thirty to thirty-five years of age, the mind at about forty-nine.

Misfortune shows those who are not really friends.

He who cannot see the truth for himself, nor, hearing it from others, store it away in his mind, that man is utterly worthless.

Women should marry when they are about eighteen years of age, and men at seven and thirty; then they are in the prime of life, and the decline in the powers of both will coincide.