I think the first wisdom is to restrain the tongue.
Good-breeding is the art of showing men, by external signs, the internal regard we have for them. It arises from good sense, improved by conversing with good company.
Don't promise twice what you can do at once.
Flee sloth; for the indolence of the soul is the decay of the body.
The best way to keep good acts in memory is to refresh them with new.
The primary virtue is: hold your tongue; who knows how to keep quiet is close to God.