Ahura Mazda — the Wise Lord — is a creator who is wholly good and, notably, not omnipotent in the classical sense: he does not create or permit evil, and the hostile spirit opposes him genuinely. Many philosophers have observed that this is a cleaner solution to the problem of evil than the monotheisms manage, at the cost of a limited God. Zoroastrians themselves have disputed the framing for centuries, and reformist strands read the tradition as monotheistic with Angra Mainyu as a subordinate corruption.