Christian Science is a 1907 book by the American writer Mark Twain. The book is a collection of essays Twain wrote about Christian Science, beginning with an article that was published in Cosmopolitan in 1899.
Samuel Langhorne Clemens, known by his pen name Mark Twain, was an American writer, humorist, entrepreneur, publisher, and lecturer. He was lauded as the “greatest humorist [the United States] has produced”, and William Faulkner called him “the father of American literature”.