A wise man does not chatter with one whose mind is sick.
Applicants for wisdom do what I have done: inquire within.
He who knows others is wise; he who knows himself is enlightened.
Every man, however wise, needs the advice of some sagacious friend in the affairs of life.
Wisdom is not attained by years, but by ability.
Knowledge which is divorced from justice may be called cunning rather than wisdom.
No man is wise enough by himself.
Of all the things which wisdom provides to make us entirely happy, much the greatest is the possession of friendship.
When misfortune comes, The wisest even lose their mother wit
If someone speaks badly of you, do not defend yourself against the accusations, but reply; you obviously don’t know about my other vices otherwise you would have mentioned these as well.
Do not test out your mind on the grounds that you are examining what seductive and impure thoughts look like, imagining that, as you do this, you will not be overcome by them. Even the wise have in this way been thrown into confusion and become infatuated.
It takes a wise man to recognize a wise man.