%manichee%

{ , n. [ LL. Manichaeus: cf. F. manichéen. ] A believer in the doctrines of Manes, a Persian of the third century A. D., who taught a dualism in which Light is regarded as the source of Good, and Darkness as the source of Evil. [ 1913 Webster ]

The Manichaeans stand as representatives of dualism pushed to its utmost development. Tylor. [ 1913 Webster ]