9. Pay attention to what old people say, for they learnt from those who came before them. You can learn from them, and they can teach you how to have an answer ready when you need one.
10. You should not provide a sinner with more opportunity to sin. You might get hurt yourself; it's as easy as getting burnt while adding logs to a fire.
11. You should not get up and walk out on someone who is insolent. He might twist your words and use them against you.
12. You should not lend anything to someone more powerful than you. If you do, you might as well consider it lost.
13. You should not guarantee anyone else's loan to an extent that you cannot afford. You must be prepared to pay any such guarantee.