Ecclesiastes 10:12-14

MLV(i) 12 The words of a wise man's mouth are gracious, but the lips of a fool will swallow himself up. 13 The beginning of the words of his mouth is foolishness and the end of his talk is mischievous madness.
14 A fool also multiplies words; yet man does not know what will be and what will be after him, who can tell him?