The other man stood rooted to the spot, like one whose hair was standing on end. He opened his mouth without speech.
"Or rather," went on the priest, "I persuaded the thief to let me put it back. I told him what I'd guessed and showed him there was still time for repentance. I don't mind telling you in professional confidence; besides, I don't think the Mounteagles would prosecute, now they've got the thing back, especially considering who stole it."
"Do you mean the Master?" asked the late Phroso.
"No," said Father Brown, "the Master didn't steal it."
"But I don't understand," objected the other. "Nobody was outside the window except the Master; and a hand certainly came from outside."
"The hand came from outside, but the thief came from the inside," said Father Brown.
"We seem to be back among the mystics again. Look here, I'm a practical man: I only wanted to know if it is all right with the ruby——"
"I knew it was all wrong," said Father Brown, "before I even knew there was a ruby."
After a pause he went on thoughtfully. "Right away back in that argument of theirs, by the tents, I knew things were going wrong. People will tell you that theories don't matter and that logic and philosophy aren't practical. Don't you believe them. Reason is from God, and when things are unreasonable there is something the matter. Now, that quite abstract argument ended with something funny. Consider what the theories were. Hardcastle was a trifle superior and said that all things were perfectly possible; but they were mostly done merely by mesmerism, or clairvoyance; scientific names for philosophical puzzles, in the usual style. But Hunter thought it all sheer fraud and wanted to show it up. By Lady Mounteagle's testimony, he not only went about showing up fortune-tellers and such like, but he had actually come down specially to confront this one. He didn't often come; he didn't get on with Mounteagle, from whom, being a spendthrift, he always tried to borrow; but when he heard the Master was coming, he came hurrying down. Very well. In spite of that, it was Hardcastle who went to consult the wizard and Hunter who refused. He said he'd waste no time on such nonsense; having apparently wasted a lot of his life on proving it to be nonsense. That seems inconsistent. He thought in this case it was crystal-gazing; but he found it was palmistry."
"Do you mean he made that an excuse?" asked his companion, puzzled.