Proverbs 17:7

Excellent lips are not fitting for a wicked fool,

Even less are lying lips for a noble man.

Proverbs 17:10

A rebuke goes deeper into one who understands

Than a hundred blows into a fool.

Let a man meet a bear robbed of her cubs,

Rather than a fool in his folly.

Why is there a price in the hand of a fool to acquire wisdom,

When he has no heart of wisdom?

Wisdom is in the presence of the one who understands,

But the eyes of a fool are on the ends of the earth.

A foolish son is a vexation to his father

And bitterness to her who gave birth to him.

Even an ignorant fool, when he keeps silent, is considered wise;

When he closes his lips, he is considered understanding.