Essence and energy In Eastern Orthodox theology God's essence is called
ousia, "all that subsists by itself and which has not its being in another", and is distinct from his energies (
energeia in Greek, actus in Latin) or activities as actualized in the world. The ousia of God is God as God is. The essence, being, nature and substance of God as taught in Eastern Christianity is uncreated, and cannot be comprehended in words. According to Lossky, God's ousia is "that which finds no existence or subsistence in another or any other thing". God's ousia has no necessity or subsistence that needs or is dependent on anything other than itself.
Type of distinction Real distinction According to Fr.
John Romanides, Palamas considers the distinction between God's essence and his energies to be a "real distinction", as distinguished from the
Thomistic "virtual distinction" and the
Scotist "formal distinction". Romanides suspects that Barlaam accepted a "formal distinction" between God's essence and his energies. Other writers agree that Palamas views the distinction between the divine essence and the divine energies as "real". According to
Vladimir Lossky of the neopatristic school, if we deny the real distinction between essence and energy, we cannot fix any clear borderline between the procession of the divine persons (as existences and/or realities of God) and the creation of the world: both the one and the other will be equally acts of the divine nature (strictly uncreated from uncreated). The being and the action(s) of God then would appear
identical, leading to the teaching of
pantheism.
Modern interpretation Some contemporary scholars argue against describing Palamas's essence–energies distinction in God as a metaphysically "real" distinction. Orthodox
philosophical theologian David Bentley Hart expresses doubt "that Palamas ever intended to suggest a
real distinction between God's essence and energies." G. Philips argues that Palamas's distinction is not an "
ontological" distinction but, rather, analogous to a "formal distinction" in the
Scotist sense of the term. According to
Dominican Catholic theological historian Fr.
Aidan Nichols, Palamas's essence–energies distinction is "not simply by virtue of his saving action
ab extra, much less as a merely 'formal' distinction, something demanded by the limited operating capacities of human minds." According to George C. Papademetriou, the essence–energies distinction "is contrary to the Western confusion of the uncreated essence with the uncreated energies and this is by the claim that God is Actus Purus". ==Catholic perspectives==