Hell wasn't a major reservoir of evil, any more then Heaven, in Crowley's opinion, was a fountain of goodness; they were just sides in the great cosmic chess game. Where you found the real McCoy, the real grace and the real heart-stopping evil, was right inside the human mind.
Terry Pratchett, Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch
evil, good, heaven, hell