Proverbs 14:33
"Wisdom resteth in the heart of him that hath understanding: but that which is in the midst of fools is made known."
Cross References (ranked by relevance)
A fool’s wrath is presently known: but a prudent man covereth shame.
A prudent man concealeth knowledge: but the heart of fools proclaimeth foolishness.
Every prudent man dealeth with knowledge: but a fool layeth open his folly.
Yea also, when he that is a fool walketh by the way, his wisdom faileth him, and he saith to every one that he is a fool.
The heart of the righteous studieth to answer: but the mouth of the wicked poureth out evil things.
A fool uttereth all his mind: but a wise man keepeth it in till afterwards.
The tongue of the wise useth knowledge aright: but the mouth of fools poureth out foolishness.