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

1 Dead flies will cause even a bottle of perfume to stink! Yes, an ounce of foolishness can outweigh a pound of wisdom and honor. 2 The hearts of the wise lead them to do right, and the hearts of the foolish lead them to do evil. 3 You can identify fools just by the way they walk down the street!
12 It is pleasant to listen to wise words, but the speech of fools brings them to ruin. 13 Since fools base their thoughts on foolish premises, their conclusions will be wicked madness. 14 Foolish people claim to know all about the future and tell everyone the details! But who can really know what is going to happen? 15 Fools are so exhausted by a little work that they have no strength for even the simplest tasks.