Ecclesiastes 10:1-3; Ecclesiastes 10:12-15

1 As dead flies give perfume a bad smell, so a little folly outweighs wisdom and honor. 2 The heart of the wise inclines to the right, but the heart of the fool to the left. 3 Even as fools walk along the road, they lack sense and show everyone how stupid they are.
12 Words from the mouth of the wise are gracious, but fools are consumed by their own lips. 13 At the beginning their words are folly; at the end they are wicked madness— 14 and fools multiply words. No one knows what is coming— who can tell someone else what will happen after them? 15 The toil of fools wearies them; they do not know the way to town.