THE HAMMER OF GOD
when he felt a hand on his shoulder, and turned to behold the dark, thin figure of the doctor, his face darker yet with suspicion.
"Sir," said the physician harshly, "you appear to know some secrets in this black business. May I ask if you are going to keep them to yourself?"
"Why, doctor," answered the priest, smiling quite pleasantly, "there is one very good reason why a man of my trade should keep things to himself when he is not sure of them, and that is that it is so constantly his duty to keep them to himself when he is sure of them. But if you think I have been discourteously reticent with you or anyone, I will go to the extreme limit of my custom. I will give you two very large hints."
"Well, sir?" said the doctor gloomily.
"First," said Father Brown quietly, "the thing is quite in your own province. It is a matter of physical science. The blacksmith is mistaken, not perhaps in saying that the blow was divine, but certainly in saying that it came by a miracle. It was no miracle, doctor, except in so far as man is himself a miracle, with his strange and wicked and yet half-heroic heart. The force that smashed that skull was a force well known to scientists—one of the most frequently debated of the laws of nature."
The doctor, who was looking at him with frowning intentness, only said: "And the other hint?"
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