“Who Moved My Cheese?” is a simple parable that reveals profound truths. It is an amusing and enlightening story of four characters who live in a “Maze” and look for “Cheese” to nourish them and make them happy. Two are mice named Sniff and Scurry. And two are “Little people” — beings the size of mice who look and act a lot like people. Their names are Hem and Haw.