Proverbs 14:33
Wisdom rests in the heart of him that has understanding: but that which is in the midst of fools is made known.
Proverbs 12:16
A fool's wrath is at once known: but a prudent man covers shame.
Proverbs 29:11
A fool utters all his mind: but a wise man keeps it in till afterwards.
Proverbs 12:23
A prudent man conceals knowledge: but the heart of fools proclaims foolishness.
Proverbs 13:16
Every prudent man deals with knowledge: but a fool lays open his folly.
Proverbs 15:2
The tongue of the wise uses knowledge aright: but the mouth of fools pours out foolishness.
Proverbs 15:28
The heart of the righteous studies to answer: but the mouth of the wicked pours out evil things.
Ecclesiastes 10:3
Yea also, when he that is a fool walks by the way, his wisdom fails him, and he says to every one that he is a fool.