Both Empedocles and Heraclitus held it for a truth that man could not be altogether cleared from injustice in dealing with beasts as he now does.
PlutarchEuripides was wont to say, silence was an answer to a wise man; but we seem to have greater occasion for it in our dealing with fools and unreasonable persons; for men of breeding and sense will be satisfied with reason and fair words.
Plutarch