Proverbs 12:23
A prudent man keeps what he knows to himself, but the hearts of fools shout forth their foolishness.
Proverbs 13:16
Every sensible person acts from knowledge, but a fool demonstrates folly.
Proverbs 15:2
The wise speak, presenting knowledge appropriately, but fools spout foolishness.
Proverbs 11:13
Whoever spreads gossip betrays secrets, but the trustworthy person keeps a confidence.
Proverbs 10:14
Those who are wise store up knowledge, but when the fool speaks, destruction is near.
Proverbs 10:19
Transgression is at work where people talk too much, but anyone who holds his tongue is prudent.
Ecclesiastes 10:3
Furthermore, the way a fool lives shows he has no sense; he proclaims to everyone that he's a fool.
Ecclesiastes 10:12-14
The words spoken by the wise are gracious, but the lips of a fool will devour him.