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