One day, a poor man wearing torn clothes walked past a rich man's house.  The rich man picked up a rock and threw it at the poor man's head.  The poor man couldn't say anything to the rich man.  He just picked up the rock the rich man had just thrown at him and put it in his pocket.  He thought that one day he would throw the rock back at the rich man. 

   Not very long after that, the rich man spent all of his money; he sold all of his treasure, and he became a poor man, poorer than the other poor man.

   One day, the rich man wore torn clothing and walked past the poor man's house.  So, the poor man ran quickly into his house to get the rock the rich man had thrown at him before.  He planned to throw it back at the rich man, but he thought to himself, "That rich man, he is now much poorer than I am.  So, I will let him go.  I don't have to throw the rock back at him.   If I did, many villagers would say that I am not a good person."