21. Like a house which has been demolished, so is wisdom to the foolish. And the knowledge of the unwise is like meaningless words.
22. Doctrine to the senseless is like fetters on the feet, and like chains on the right hand.
23. A foolish man lifts up his voice in laughter. But a wise man will not even laugh quietly to himself.
24. Doctrine is to the prudent like a gold ornament, and like an armband on the right arm.
25. The feet of the foolish step easily into his neighbor's house. But an experienced man will be apprehensive in the presence of the powerful.
26. A senseless man will gaze through a window into the house. But a man who has been well-taught will stand outside.
27. It is foolish for a man to listen through the door. And a prudent man will be grieved at this disgrace.
28. The lips of the imprudent will describe senseless things. But the words of the prudent will be weighed on a balance.
29. The hearts of the foolish are in their mouths. But the mouths of the wise are with their hearts.
30. Whenever the impious curse the devil, they curse their own soul.
31. Those who whisper accusations defile their own souls, and they will be hated by all. And whoever abides with them will be hateful. The silent and understanding man will be honored.