No day is wholly unproductive of good.

Even though it's hard, it's easy.

The fool knows after he has suffered.

Men must sweat to attain virtue.

He for himself weaves woe who weaves for others woe, and evil counsel on the counselor recoils.

The man who does evil to another does evil to himself, and the evil counsel is most evil for him who counsels it.

...Perses, hear me out on justice, and take what I have to say to heart; cease thinking of violence. For the son of Kronos, Zeus, has ordained this law to men: that fishes and wild beasts and winged birds should devour one another, since there is no justice in them; but to mankind he gave justice which proves for the best.