Proverbs 12:23

A shrewd man keeps his knowledge to himself, but a foolish heart proclaims its folly.
BSB · Berean Standard Bible
A prudent man concealeth knowledge: but the heart of fools proclaimeth foolishness.
KJV · King James Version
A prudent man keeps his knowledge, but the hearts of fools proclaim foolishness.
WEB · World English Bible
A prudent man concealeth knowledge; But the heart of fools proclaimeth foolishness.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

A prudent
Proverbs 10:19; Proverbs 11:13; Proverbs 13:16
but
Proverbs 15:2; Ecclesiastes 10:3, 12–14