Thus Giotto or Fra Angelico would have at once admitted theologically that God was too good to be painted; but they would always try to paint Him. And they felt (very rightly) that representing Him as a rather quaint old man with a gold crown and a white beard, like a king of the elves, was less profane than resisting the sacred impulse to express Him in some way. That is why the Christian world is full of gaudy pictures and twisted statues which seem, to many refined persons, more blasphemous than the secret volumes of an atheist. The trend of good is always towards Incarnation. But, on the other hand, those refined thinkers who worship the Devil, whether in the swamps of Jamaica or the salons of Paris, always insist upon the shapelessness, the wordlessness, the unutterable character of the abomination. They call him “horror of emptiness,” as did the black witch in Stevenson's Dynamiter; they worship him as the unspeakable name; as the unbearable silence. They think of him as the void in the heart of the whirlwind; the cloud on the brain of the maniac; the toppling turrets of vertigo or the endless corridors of nightmare. It was the Christians who gave the Devil a grotesque and energetic outline, with sharp horns and spiked tail. It was the saints who drew Satan as comic and even lively. The Satanists never drew him at all. And as it is with moral good and evil, so it is also with mental clarity and mental confusion. There is one very valid test by which we may separate genuine, if perverse and unbalanced, originality and revolt from mere impudent innovation and bluff. The man who really thinks he has an idea will always try to explain that idea. The charlatan who has no idea will always confine himself to explaining that it is much too subtle to be explained. The first idea may really be very outree or specialist; it may really be very difficult to express to ordinary people. But because the man is trying to express it, it is most probable that there is something in it, after all. The honest man is he who is always trying to utter the unutterable, to describe the indescribable; but the quack lives not by plunging into mystery, but by refusing to come out of it.