Dualism, the moral or spiritual belief that two fundamental concepts exist, which often oppose each other

Dualism (philosophy of mind), a set of views about the relationship between mind and matter, which begins with the claim that mental phenomena are, in some respects, non-physical

The term nondual is a literal translation of the Sanskrit term advaita ("not two"). The term implies that things remain distinct while not being separate. The term can refer to a belief, condition, theory, practice, or...

Property dualism, a philosophy of mind and a subbranch of emergent materialism

Epistemological dualism, a philosophical concept also known as representative realism, indirect realism, and the veil of perception