They who are to be judges must also be performers.

Injustice results as much from treating unequals equally as from treating equals unequally.

Through discipline comes freedom.

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

For it is owing to their wonder that men both now begin and at first began to philosophize... They were pursuing science in order to know, and not for any utilitarian end.

Art not only imitates nature, but also completes its deficiencies.

The knowledge of the soul admittedly contributes greatly to the advance of truth in general, and, above all, to our understanding of Nature, for the soul is in some sense the principle of animal life.