Immaterialism

Webster's Dictionary

(1): ( n.) The doctrine that external bodies may be reduced to mind and ideas in a mind; any doctrine opposed to materialism or phenomenalism, esp. a system that maintains the immateriality of the soul; idealism; esp., Bishop Berkeley's theory of idealism.

(2): ( n.) The doctrine that immaterial substances or spiritual being exist, or are possible.

Charles Buck Theological Dictionary

The belief that the soul is a spiritual substance distinct from the body.

See Materialism and SOUL.