Dualism
WordNet
noun
(1) The doctrine that reality consists of two basic opposing elements, often taken to be mind and matter (or mind and body), or good and evil
WiktionaryText
Noun
- Duality; the condition of being double.
- The view that the world consists of, or is explicable in terms of, two fundamental principles, such as mind and matter or good and evil.
- The belief that the world is ruled by a pair of antagonistic forces, such as good and evil; the belief that man has two basic natures, the physical and the spiritual.