Proverbs 12:23 A prudent man concealeth knowledge: but the heart of fools proclaimeth foolishness.

Proverbs 13:16 Every prudent man dealeth with knowledge: but a fool layeth open his folly.

Proverbs 15:2 The tongue of the wise useth knowledge aright: but the mouth of fools poureth out foolishness.

Proverbs 15:28 The heart of the righteous studieth to answer: but the mouth of the wicked poureth out evil things.

Proverbs 29:11 A fool uttereth all his mind: but a wise man keepeth it in till afterwards.

Proverbs 18:2 A fool hath no delight in understanding, but that his heart may discover itself.

Proverbs 18:7 A fool's mouth is his destruction, and his lips are the snare of his soul.

Ecclesiastes 5:3 For a dream cometh through the multitude of business; and a fool's voice is known by multitude of words.

Ecclesiastes 10:3 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.