"Witchcraft, and all manner of Spectre-work, and Demonology, we have now named Madness and Disease of the Nerves. Seldom reflecting that still the new question comes up on us: What is Madness, what are Nerves? Ever, as before, does Madness remain a mysterious-terrific, altogether infernal boiling-up of the Nether Chaotic Deep, through this fair-painted Vision of Creation, which swims thereon, which we name the Real. Was Luther's Picture of the Devil less a Reality, whether it were formed within the bodily eye, or without it? In every the wisest Soul lies a whole world of internal Madness, an authentic Demon Empire; out of which, indeed, his world of Wisdom has been creatively built together, and now rests there, as on its dark foundations does a habitable flowery Earth-rind."