Ecclesiastes 10:3, 12-14

Even when the fool walks on the road, he lacks sense, and he says to everyone that he is a fool.

The words of a wise man’s mouth win him favor, but the lips of a fool consume him. The beginning of the words of his mouth is foolishness, and the end of his talk is evil madness. A fool multiplies words, though no man knows what is to be, and who can tell him what will be after him?