Proverbs 14:8 in the King James Version
The wisdom of the prudent is to understand his way: but the folly of fools is deceit.
Context
7 Stay away from a foolish man, for you won’t find knowledge on his lips.
8 The wisdom of the prudent is to think about his way, but the folly of fools is deceit.
9 Fools mock at making atonement for sins, but among the upright there is good will.