good and evil dualism; Manichaeism
A philosophical or religious concept that the world is governed by two opposing principles of good and evil. Often used in discussions of Zoroastrianism, Manichaeism, or moral dualism.
Good and evil dualism is a way of thinking that explains the world through two principles: good and evil.
Manichaeism is a representative religion of good and evil dualism.
二元論 is the broader term for dualism in general (e.g., mind-body dualism), while 善悪二元論 specifically refers to moral dualism between good and evil.
Compound of 善悪 (good and evil) + 二元論 (dualism). The term is a direct calque from Western philosophical and religious concepts of moral dualism.