Dr. Seuss, whose real name was Theodor Seuss Geisel, was an American author and illustrator best known for his beloved children's books. He was born on March 2, 1904, in Springfield, Massachusetts. He published over 60 books during his career, many of which have become classics, such as "The Cat in the Hat," "Green Eggs and Ham," and "How the Grinch Stole Christmas!" His works are characterized by imaginative characters, playful rhymes, and anapestic meter. Dr. Seuss's books have sold over 600 million copies and have been translated into more than 20 languages. He passed away on September 24, 1991. His legacy continues to inspire children and adults alike.