Samuel Clemens, better known by his pen name Mark Twain, was an American author and humorist born on November 30, 1835. He is famous for his novels, including The Adventures of Tom Sawyer and Adventures of Huckleberry Finn, which are considered classics of American literature. Twain's writing often explored themes of race, identity, and social justice, reflecting the complexities of 19th-century America. In addition to his literary work, Twain was a public speaker and a keen observer of human nature. He traveled extensively, which influenced his writing and provided material for his essays and lectures. Samuel Clemens passed away on April 21, 1910, leaving a lasting legacy in American culture.