9. Whoever quarries stones may be injured by them; whoever splits logs may be endangered by them.
10. If the ax is dull and its edge unsharpened, more strength is needed, but skill will bring success.
11. If a snake bites before it is charmed, the charmer receives no fee.
12. Words from the mouth of the wise are gracious, but fools are consumed by their own lips.
13. At the beginning their words are folly; at the end they are wicked madness—