The best friend is he that, when he wishes a person's good, wishes it for that person's own sake.

Of the modes of persuasion furnished by the spoken word there are three kinds. The first kind depends on the personal character ofthe speaker; the second on putting the audience into a certain frame of mind; the third on the proof, provided by the words of the speech itself.

It is through wonder that men now begin and originally began to philosophize; wondering in the first place at obvious perplexities, and then by gradual progression raising questions about the greater matters too.

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

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

All food must be capable of being digested, and that what produces digestion is warmth; that is why everything that has soul in it possesses warmth.

It is easy to perform a good action, but not easy to acquire a settled habit of performing such actions.