17. ⌊As⌋ iron sharpens iron,so one person sharpens the wits of another.
18. Whoever takes care of a fig tree can eat its fruit,and whoever protects his master is honored.
19. As a face is reflected in water,so a person is reflected by his heart.
20. Hell and decay are never satisfied,and a person’s eyes are never satisfied.
21. The crucible is for refining silver and the smelter for gold,but a person ⌊is tested⌋ by the praise given to him.
22. If you crush a stubborn fool in a mortar with a pestle along with grain,⌊even then⌋ his stupidity will not leave him.