Proverbs 15:2 in the King James Version
The tongue of the wise useth knowledge aright: but the mouth of fools poureth out foolishness.
Context
1 A gentle answer turns away wrath, but a harsh word stirs up anger.
2 The tongue of the wise commends knowledge, but the mouths of fools gush out folly.
3 The LORD’s eyes are everywhere, keeping watch on the evil and the good.