Instruct the wise and they will be wiser still; teach the righteous and they will add to their learning.

Do not speak to fools, for they will scorn your prudent words.

Whoever corrects a mocker invites insults; whoever rebukes the wicked incurs abuse.

Do not answer a fool according to his folly, or you yourself will be just like him.

Do not rebuke mockers or they will hate you; rebuke the wise and they will love you.