"Let your speech be better than silence, or be silent." —Dionysius

"Talk sense to a fool and he calls you foolish." —Euripides

"We have two ears and one mouth, so we should listen more than we say." —Zeno, Quoted By Diogenes Laërtius

"The first and greatest victory is to conquer yourself." —Hierocles

"Sometimes even to live is an act of courage." —Seneca

"The measure of a man is what he does with power." —Plato