Ecclesiastes 10:11-14

If the serpent bite before it is charmed, then is there no advantage in the charmer. The words of a wise man’s mouth are gracious; but the lips of a fool will swallow up himself. The beginning of the words of his mouth is foolishness; and the end of his talk is mischievous madness. A fool also multiplieth words: yet man knoweth not what shall be; and that which shall be after him, who can tell him?