Identitätsphilosophie
/ɪˌdɛntiˈteɪtsfɪˌlɒsəˌfiː/(also Identitatsphilosophie)
noun
A system that assumes the fundamental identity of spirit and nature; specifically. Schelling's metaphysical theory of absolute identity.
Origin
Mid 19th century; earliest use found in Henry Sidgwick (1838–1900), philosopher. From German Identitätsphilosophie from the genitive of Identität + Philosophie.