The words of a wise man's mouth [are] gracious; but the lips of a fool will swallow up himself. (10:12)

The beginning of the words of his mouth [is] foolishness: and the end of his talk [is] mischievous madness. (10:13)

A fool also is full of words: a man cannot tell what shall be; and what shall be after him, who can tell him? (10:14)