15. If you know what you are talking about, you have something more valuable than gold or jewels.
16. Anyone stupid enough to promise to be responsible for a stranger's debts ought to have his own property held to guarantee payment.
17. What you get by dishonesty you may enjoy like the finest food, but sooner or later it will be like a mouthful of sand.
18. Get good advice and you will succeed; don't go charging into battle without a plan.
19. A gossip can never keep a secret. Stay away from people who talk too much.
20. If you curse your parents, your life will end like a lamp that goes out in the dark.
21. The more easily you get your wealth, the less good it will do you.