Someone brought a compass that he had found and asked Mulla Nasrudin if he knew what it was. Mulla looked at the compass and began to cry. A few minutes later, he stopped crying and began to laugh.
The man asked: Why did you cry and why are you laughing now?
Mulla said: I cried because I thought how stupid you were not to know what a tiny object like this is. Then I laughed, because when I thought about it, I realized that I didn't know what it was either.
This spiritual story is from the book The Classic Tales of Mulla Masreddin by Houman Farzad.