The theory of two Gods, one good and the other evil, was held by Cerdo, and Marcion (Hippolytus, Refut. omnium Hær. VII. cap. 17: Irenæus, III. xxv. 3, quoted in note on Cat. iv. 4). The Manichees also held that the Creator of the world was distinct from the Supreme God (Alexander Lycop. de Manichæorum Sententiis, cap. iii.).