10 If the iron has no edge, and he does not make it sharp, then he has to put out more strength; but wisdom makes things go well.
11 If a snake gives a bite before the word of power is said, then there is no longer any use in the word of power.
12 The words of a wise man's mouth are sweet to all, but the lips of a foolish man are his destruction.
13 The first words of his mouth are foolish, and the end of his talk is evil crime.
14 The foolish are full of words; man has no knowledge of what will be; and who is able to say what will be after him?
15 The work of the foolish will be a weariness to him, because he has no knowledge of the way to the town.
16 Unhappy is the land whose king is a boy, and whose rulers are feasting in the morning.
