Proverbs 12:23
A prudent man conceals knowledge, but the heart of fools proclaims foolishness.
Proverbs 13:16
Every prudent man works with knowledge, but a fool flaunts folly.
Proverbs 15:2
The tongue of the wise utters knowledge rightly, but the mouth of fools pours out folly.
Proverbs 11:13
He who goes around as a tale-bearer reveals secrets, but he who is of a faithful spirit conceals a matter.
Proverbs 10:14
Wise men lay up knowledge, but the mouth of a foolish man is a present destruction.
Proverbs 10:19
Transgression is not lacking in the multitude of words, but he who refrains his lips does wisely.
Ecclesiastes 10:3
Yea also, when the fool walks by the way, his understanding fails him, and he says to everyone [that] he is a fool.
Ecclesiastes 10:12-14
The words of a wise man's mouth are gracious, but the lips of a fool will swallow himself up.