Ecclesiastes 10:1-3; Ecclesiastes 10:12-15

1 Dead flies cause the ointment of the apothecary to send forth an offensive odor: [so doth] a little folly him that is in reputation for wisdom [and] honor.

2 A wise man's heart [is] at his right hand; but a fool's heart [is] at his left.

3 Also, when he that is a fool walketh by the way, his wisdom faileth [him], and he saith to every one [that] he [is] a fool.

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

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

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

15 The labor of the foolish wearieth every one of them, because he knoweth not how to go to the city.