Proverbs 10:14 KJV

Wise men lay up knowledge: but the mouth of the foolish is near destruction.
Proverbs 10:14, King James Version

In context

13 In the lips of him that hath understanding wisdom is found: but a rod is for the back of him that is void of understanding.

14 Wise men lay up knowledge: but the mouth of the foolish is near destruction.

15 The rich man’s wealth is his strong city: the destruction of the poor is their poverty.