Speech is the mirror of the soul; as a man speaks, so is he.

I have often regretted my speech, but never my silence

An angry man is again angry with himself, when he returns to reason

From the errors of others, a wise man corrects his own.

The happy man is not he who seems thus to others, but who seems thus to himself.

A wise man will be the master of his mind. A fool will be it's slave.