Theodor Seuss Geisel (pronounced /ˈsɔɪs ˈɡaɪzəl/; March 2, 1904 – September 24, 1991) was an American writer and cartoonist, better known by his pen name, Dr. Seuss (often pronounced /ˈsuːs/, but he himself said /ˈsɔɪs/[1]). He published over 60 children's books, which were often characterized by his imaginative characters, rhyme, and frequent use of trisyllabic meter. His most notable books include the bestselling classics Green Eggs and Ham, The Cat in the Hat, and One Fish Two Fish Red Fish Blue Fish.