Writers C.S. Lewis and Tom Stoppard, though philosophically different, both write about love that embodies the natural law. The natural law can be defined as law that is inherent in man and can be discerned by reason rather than by revelation. Both writers use their observational style in order to reason their way to nearly identical laws of love. Stoppard’s The Invention of Love, Arcadia, Rock ‘n’ Roll and The Real Thing will be analyzed using the framework of C.S. Lewis’s book, The Four Loves.