The term mythology may either refer to the study of myths in general, or a body of myths regarding a particular subject. The study of myth began in ancient history. Rival classes of the Greek myths by Euhemerus, Plato, and Sallustius were developed by the Neoplatonists and later revived by Renaissance mythographers. Today, the study of myth continues in a wide variety of academic fields, including folklore studies, philology, psychology, and anthropology. Moreover, the academic comparisons of bodies of myth are known as comparative mythology.