There’s a story about a town fool who asked a local teacher how far it is to heaven and how far it is to hell. The teacher replied, “I do not know for sure.”
The fool became indignant and angrily said, “Don’t know! Why do people pay you for things you don’t know?”
“Well, if I was paid for everything I don’t know, I would be very rich,” said the teacher. “I am just paid for the little things I do know.”