17. Don't visit your neighbours too often; they may get tired of you and come to hate you.
18. A false accusation is as deadly as a sword, a club, or a sharp arrow.
19. Depending on an unreliable person in a crisis is like trying to chew with a loose tooth or walk with a crippled foot.
20. Singing to a person who is depressed is like taking off his clothes on a cold day or like rubbing salt in a wound.
21. If your enemies are hungry, feed them; if they are thirsty, give them a drink.