where it was, it was a corpse calling for what you might call an explanation. He adopted the bolder stroke of discovering it himself and explaining it himself.
'Then there dawned on this strange and frightfully fertile mind the conception of a story of substitution; the reversal of the parts. He had already assumed the part of Arnold Aylmer. Why should not his dead enemy assume the part of John Strake? There must have been something in that topsy–turyydom to take the fancy of that darkly fanciful man. It was like some frightful fancy–dress ball to which the two mortal enemies were to go dressed up as each other. Only, the fancy–dress ball was to be a dance of death: and one of the dancers would be dead. That is why I can imagine that man putting it in his own mind, and I can imagine him smiling.'
Father Brown was gazing into vacancy with his large grey eyes, which, when not blurred by his trick of blinking, were the one notable thing in his face. He went on speaking simply and seriously: 'All things are from God; and above all, reason and imagination and the great gifts of the mind. They are good in themselves; and we must not altogether forget their origin even in their perversion. Now this man had in him a very noble power to be perverted; the power of telling stories. He was a great novelist; only he had twisted his fictive power to practical and to evil ends; to deceiving men with false fact instead of with true fiction. It began with his deceiving old Aylmer with elaborate excuses and ingeniously detailed lies; but even that may have been, at the beginning, little more than the tall stories and tarradiddles of the child who may say equally he has seen the King of England or the King of the Fairies. It grew strong in him through the vice that perpetuates all vices, pride; he grew more and more vain of his promptitude in producing stories of his originality, and subtlety in developing them. That is what the young Aylmers meant by saying that he could always cast a spell over their father; and it was true. It was the sort of spell that the storyteller cast over the tyrant in the Arabian Nights. And to the last he walked the world with the pride of a poet, and with the false yet unfathomable courage of a great liar. He could always produce more Arabian Nights if ever his neck was in danger. And today his neck was in danger.
'But I am sure, as I say, that he enjoyed it as a fantasy as well as a conspiracy. He set about the task of telling the true story the wrong way round: of treating the dead man as living and the live man as dead. He had already got into Aylmer 's dressing–gown; he proceeded to get into Aylmer 's body and soul. He looked at the corpse as if it were his own corpse lying cold in the snow. Then he spread–eagled it in that strange fashion to suggest the sweeping descent of a bird of prey, and decked it out not only in his own dark and flying garments but in a whole dark fairy–tale about the black bird that could only fall by the silver bullet. I do not know whether it was the silver glittering on the sideboard or the snow shining beyond the door that suggested to his intensely artistic temperament the theme of white magic and the white metal used against magicians. But whatever its origin, he made it his own like a poet; and did it very promptly, like a practical man. He completed the exchange and reversal of parts by flinging the corpse out on to the snow as the corpse of Strake. He did his best to work up a creepy conception of Strake as something hovering in the air everywhere, a harpy with wings of speed and claws of death; to explain the absence of footprints and other things. For one piece of artistic impudence I hugely admire him. He actually turned one of the contradictions in his case into an argument for it; and said that the man's cloak being too long for him proved that he never walked on the ground like an ordinary mortal. But he looked at me very hard while he said that; and something told me that he was at that moment trying a very big bluff.'
Dr Boyne looked thoughtful. 'Had you discovered the truth by then?' he asked. 'There is something very queer and close to the nerves, I think, about notions affecting identity. I don't know whether it would be more weird to get a guess like that swiftly or slowly. I wonder when you suspected and when you were sure.'
'I think I really suspected when I telephoned to you,' replied his friend. 'And it was nothing more than the red light from the closed door brightening and darkening on the carpet. It looked like a splash of blood that grew vivid as it cried for vengeance. Why should it change like that? I knew the sun had not come out; it could only be because the second door behind it had been opened and shut on the garden. But if he had gone out and seen his enemy then, he would have raised the alarm then; and it was some time afterwards that the fracas occurred. I began to feel he had gone out to do something … to prepare something … but as to when I was certain, that is a different matter. I knew that right at the end he was trying to hypnotize me, to master me by the black art of eyes like talismans and a voice like an incantation. That's what he used to do with old Aylmer , no doubt. But it wasn't only the way he said it, it was what he said. It was the religion and philosophy of it.'
'I'm afraid I'm a practical man,' said the doctor with gruff humour, 'and I don't bother much about religion and philosophy.'
'You'll never be a practical man till you do,' said Father Brown. 'Look here, doctor; you know me pretty well; I think you know I'm not a bigot. You know I know there are all sorts in all religions; good men in bad ones and bad men in good ones. But there's just one little fact I've learned simply as a practical man, an entirely practical point, that I've picked up by experience, like the tricks of an animal or the trade–mark of a good wine. I've scarcely ever met a criminal who philosophized at all, who didn't philosophize along those lines of orientalism and recurrence and reincarnation, and the wheel of destiny and the serpent biting its own tail. I have found merely in practice that there is a curse on the servants of that serpent; on their belly shall they go and the dust shall they eat; and there was never a blackguard or a profligate born who could not talk that sort of spirituality. It may not be like that in its real religious origins; but here in our working world it is the religion of rascals; and I knew it was a rascal who was speaking.'
'Why,' said Boyne , 'I should have thought that a rascal could pretty well profess any religion he chose.'
'Yes,' assented the other; 'he could profess any religion; that is he could pretend to any religion, if it was all a pretence. If it was mere mechanical hypocrisy and nothing else, no doubt it could be done by a mere mechanical hypocrite. Any sort of mask can be put on any sort of face. Anybody can learn certain phrases or state verbally that he holds certain views. I can go out into the street and state that I am a Wesleyan Methodist or a Sandemanian, though I fear in no very convincing accent. But we are talking about an artist; and for the enjoyment of the artist the mask must be to some extent moulded on the face. What he makes outside him must correspond to something inside him; he can only make his effects out of some of the materials of his soul. I suppose he could have said he was a Wesleyan Methodist; but he could never be an eloquent Methodist as he can be an eloquent mystic and fatalist. I am talking of the sort of ideal such a man thinks of if he really tries to be idealistic. It was his whole game with me to be as idealistic as possible; and whenever that is attempted by that sort of man, you will generally find it is that sort of ideal. That sort of man may be dripping with gore; but he will always be able to tell you quite sincerely that Buddhism is better than Christianity. Nay, he will tell you quite sincerely that Buddhism is more Christian than Christianity. That alone is enough to throw a hideous and ghastly ray of light on his notion of Christianity.'
'Upon my soul,' said the doctor, laughing, 'I can't make out whether you're denouncing or defending him.'
'It isn't defending a man to say he is a genius,' said Father Brown. 'Far from it. And it is simply a psychological fact that an artist will betray himself by some sort of sincerity. Leonardo da Vinci cannot draw as if he couldn't draw. Even if he tried, it will always be a strong parody of a weak thing. This man would have made something much too fearful and wonderful out of the Wesleyan Methodist.'
When the priest went forth again and set his face homeward, the cold had grown more intense and yet was somehow intoxicating. The trees stood up like silver candelabra of some incredible cold candlemas of purification. It was a piercing cold, like that silver sword of pure pain that once pierced the very he of purity. But it was not a killing cold, save in the sense of seeming to kill all the mortal obstructions to our immortal and immeasurable vitality. The pale green sky of twilight, with one star like the star of Bethlehem , seemed by some strange contradiction to be a cavern of clarity. It was as if there could be a green furnace of cold which wakened all things to life like warmth, and that the deeper they went into those cold crystalline colours the more were they light like winged creatures and clear like coloured glass! It tingled with truth and it divided truth from error with a blade like ice; but all that was left had never felt so much alive. It was as if all joy were a jewel in the heart of an iceberg. The priest hardly understood his own mood as he advanced deeper and, deeper into the green gloaming, drinking deeper and deeper draughts of that virginal vivacity of the air. Some forgotten muddle and morbidity seemed to be left behind, or wiped out as the snow had painted out the footprints of the man of blood. As he shuffled homewards through the snow, he muttered to himself: 'And yet he is right enough about there being a white magic, if he only knows where to look for it.'
