4. If you answer a silly question, you are just as silly as the person who asked it.
5. Give a silly answer to a silly question, and the one who asked it will realize that he's not as clever as he thinks.
6. If you let a fool deliver a message, you might as well cut off your own feet; you are asking for trouble.
7. A fool can use a proverb about as well as crippled people can use their legs.