What are the opposite words for C S Lewis?

"C S Lewis" is a proper noun, therefore it does not have any antonyms. However, the works of C S Lewis, such as his famous Chronicles of Narnia series, can be contrasted with other literary works that have different themes or styles. For example, one can compare the magical and fantastical world of Narnia with the grim and dark world of J. K. Rowling's Harry Potter series, or the philosophical and introspective writings of Jean-Paul Sartre with Lewis's Christian apologetics. While there may not be an antonym for C S Lewis himself, his works and ideas can be examined and compared to other literary works and schools of thought.