The Apollonian an Dionysian is a philosophical and literary concept, or dichotomy, based on certain features of ancient Greek mythology. Several Western philosophical and literary figures have invoked this dichotomy in critical and creative works, including Plutarch, Friedrich Nietzsche, Robert A. Heinlein, Ruth Benedict, Thomas Mann, Hermann Hesse, literary critic G. Wilson Knight, Ayn Rand (who rejected it in favor of mind-body integration), Stephen King and cultural critic Camille Paglia.