Aeschylus

"It is good even for old men to learn wisdom."

"Time brings all things to pass."

"But time growing old teaches all things."

"For somehow this disease inheres in tyranny, never to trust one's friends."

"Of prosperity mortals can never have enough."

"By polluting clear water with slime you will never find good drinking water."

"Death is easier than a wretched life; and better never to have born than to live and fare badly."

"Death is softer by far than tyranny."

"Excessive fear is always powerless."

"For children preserve the fame of a man after his death."

"I know how men in exile feed on dreams."

"It is always in season for old men to learn."

"It is best for the wise man not to seem wise."

"Justice turns the scale, bringing to some learning through suffering."

"Obedience is the mother of success and is wedded to safety."

"Of all the gods only death does not desire gifts."

"The wisest of the wise may err."

"Whoever is new to power is always harsh."

"Wisdom comes alone through suffering."