Proverbs 12:23 (NKJV) — 23 A prudent man conceals knowledge, But the heart of fools proclaims foolishness.
The prudent person and the fool. Prudent persons know more than they tell. Fools tell more than they know. In describing prudent persons as those who conceal knowledge, this verse does not speak of dishonesty or deceit, but of discretion and humility. Wise persons do not disclose information inappropriately or harmfully, nor do they try to flaunt or boast of their knowledge.