This is a very simple but beautiful children's book in which the main characters learn the difference between charity and justice. A shopkeeper and his wife, approaching retirement, wonder what they should do with their time. A wise rabbi advises the man to go out and drive a cart in the countryside each day, and the woman to read religious texts. While the man thinks he is doing nothing important, he is busy helping people who each think that he is, in disguise, one of the figures from his wife's studies. They realize that while they have been blessed with material wealth and have shared it generously, the greatest way to honor The Almighty is to give of themselves to others and to appreciate even the humblest gifts that others share with them.