This is a story about a little boy and a little girl who were playing together. The boy had a collection of marbles and the girl had a bag of sweets. The boy suggested that he will give her all his marbles in exchange for her sweets. The girl agreed. The boy kept the biggest and the most beautiful marble aside and gave the rest to the girl. The girl gave him all her sweets as she had promised. That night, the girl slept peacefully. But the boy couldn’t sleep at all, as he kept wondering if the girl had hidden some sweets from him the way he had hidden his best marbl