This is Roald Tweet on Rock Island. Before I moved to the Mississippi River, I used to worry about God. He never seemed to have much fun. Oh, no question but that he did good work. His zebra had just the right proportion of black and white stripes, his giraffe's neck and back were so angled as to make you want to slide down it like a bannister, and his elephant looked exactly the way an animal named elephant should look like.