Mark Twain (1835–1910), born Samuel Langhorne Clemens, was an American writer, humorist, and lecturer. He’s best known for his novels “The Adventures of Tom Sawyer” and “Adventures of Huckleberry Finn,” which are celebrated for their vivid depiction of American life and the use of regional vernacular. Twain’s works often include themes of adventure, satire, and social criticism, making him a pivotal figure in American literature.