Ecclesiastes 10:12-15 RSV

12 The words of a wise man's mouth win him favor, but the lips of a fool consume him.
13 The beginning of the words of his mouth is foolishness, and the end of his talk is wicked madness.
14 A fool multiplies words, though no man knows what is to be, and who can tell him what will be after him?
15 The toil of a fool wearies him, so that he does not know the way to the city.