In "The Dagger with Wings" by G. K. Chesterton, Father Brown was explaining some philosophical aspects of the murderer, saying:
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.”
What's the relationship between "dripping with gore" and Buddhism & Christianity?
And in a later paragraph, he say:
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
What's exactly meant by an artist will betray himself by some sort of sincerity?