The seat of the soul and the control of voluntary movement - in fact, of nervous functions in general, - are to be sought in the heart. The brain is an organ of minor importance.

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.

By 'life,' we mean a thing that can nourish itself and grow and decay.

All teaching and all intellectual learning come about from already existing knowledge.

Courage is the mother of all virtues because without it, you cannot consistently perform the others.

And inasmuch as the great-souled man deserves most, he must be the best of men; for the better a man is the more he deserves, and he that is best deserves most. Therefore the truly great-souled man must be a good man. Indeed greatness in each of the virtues would seem to go with greatness of soul.

Happiness involves engagement in activities that promote one's highest potentials.