10. If the ax is blunt, and one doesn’t sharpen the edge, then he must use more strength; but skill brings success.
11. If the snake bites before it is charmed, then is there no profit for the charmer’s tongue.
12. The words of a wise man’s mouth are gracious; but a fool is swallowed by his own lips.
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.Man doesn’t know what will be; and that which will be after him, who can tell him?
15. The labor of fools wearies every one of them; for he doesn’t know how to go to the city.