Aeschylus

In every tyrant's heart there springs in the end this poison, that he cannot trust a friend.

What exists outside is a man's concern; let no woman give advice; and do no mischief within doors.

It is easy when we are in prosperity to give advice to the afflicted.

It is an easy thing for one whose foot is on the outside of calamity to give advice and to rebuke the sufferer.

Married love between man and woman is bigger than oaths guarded by right of nature.

Know not to revere human things too much.

By Time and Age full many things are taught.

Time as he grows old teaches all things.

Time brings all things to pass.

Who, except the gods, can live time through forever without any pain?

There is no pain so great as the memory of joy in present grief.

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