The Incredulity of Father Brown
live in a world of truisms. Take this case; a dog barks at a man and a man runs away from a dog. Now you do not seem to be quite simple enough to see the fact; that the dog barked because he disliked the man and the man fled because he was frightened of the dog. They had no other motives and they needed none. But you must read psychological mysteries into it and suppose the dog had super-normal vision, and was a mysterious mouthpiece of doom, You must suppose the man was running away, not from the dog but from the hangman. And yet, if you come to think of it, all this deeper psychology is exceedingly improbable. If the dog really could completely and consciously realize the murderer of his master, he wouldn't stand yapping as he might at a curate at a tea-party; he's much more likely to fly at his throat. And on the other hand, do you really think a man who had hardened his heart to murder an old friend and then walk about smiling at the old friend's family, under the eyes of his old friend's daughter and postmortem doctor—do you think a man like that would be doubled up by mere remorse because a dog barked? He might feel the tragic irony of it; it might shake his soul, like any other tragic trifle. But he wouldn't rush madly the length of a garden to escape from the only witness whom he knew to be unable to talk. People have a panic like that when they are frightened, not of tragic ironies, but of
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