Dr. Seuss is one of the most prolific and celebrated American authors of the 20th century. His iconic books, cartoons, illustrations, and films have helped millions of children learn how to read words and understand the world. From the Cat in the Hat to the Lorax and Horton. From the Grinch who stole Christmas to the Green Eggs and Ham. There are lessons for all. For, as Horton once said, "A person's a person, no matter how small."