Things perfected by nature are better than those finished by art.

What one has, one ought to use: and whatever he does he should do with all his might.

It is graceful in a man to think and to speak with propriety, to act with deliberation, and in every occurrence of life to find out and persevere in the truth. On the other hand, to be imposed upon, to mistake, to falter, and to be deceived, is as ungraceful as to rave or to be insane.

For how many things, which for our own sake we should never do, do we perform for the sake of our friends.

The first duty of man is the seeking after and the investigation of truth.

There has never been a poet or orator who thought another better than himself.

To live long, live slowly.