“Impossible!” he said, as if he believed it—or as if he wanted awfully badly to believe it. - Keith Laumer

Out of the synthesis of opposites, a cancerous growth called Beauty came into being; obscene antisurvival concepts named Loyalty, Courage, Justice were born into the universe.
Wherever the elemental Purities encountered this monstrous hybrid, a battle of extermination was joined. Good could compromise with Evil, but neither could meet with the half-breed, Art.

Are you sure you’re really the Devil and not someone else with the same name?

Less than total control is no control at all. You will obey my instructions, Mr. Ravel. In every detail. Or I will scrap the project.