“He thought his detective brain as good as the criminal's, which was true. But he fully realised the disadvantage. "The criminal is the creative artist; the detective only the critic," he said with a sour smile, and lifted his coffee cup to his lips slowly, and put it down very quickly. He had put salt in it.”

“The criminal is the creative artist; the detective only the critic.”

“His soul swayed in a vertigo of moral indecision. He had only to snap the thread of a rash vow made to a villainous society, and all his life could be as open and sunny as the square beneath him. He had, on the other other hand, only to keep his antiquated honour, and be delivered inch by inch into the power of this great enemy of mankind, whose very intellect was a torture-chamber. Whenever he looked down into the square he saw the comfortable policeman, a pillar of common sense and common order. Whenever he looked back at the breakfast-table he saw the President still quietly studying him with big, unbearable eyes.”

“He is a man, I think," he said, "who cares for nothing but a joke. He is a dangerous man."Lambert laughed in the act of lifting some macaroni to his mouth."Dangerous!" he said. "You don't know little Quin, sir!""Every man is dangerous," said the old man, without moving, "Who cares only for one thing. I was once dangerous myself.”

“The simplest truth about man is that he is a very strange being; almost in the sense of being a stranger on the earth. In all sobriety, he has much more of the external appearance of one bringing alien habits from another land than of a mere growth of this one. He cannot sleep in his own skin; he cannot trust his own instincts. He is at once a creator moving miraculous hands and fingers and a kind of cripple. He is wrapped in artificial bandages called clothes; he is propped on artificial crutches called furniture. His mind has the same doubtful liberties and the same wild limitations. Alone among the animals, he is shaken with the beautiful madness called laughter; as if he had caught sight of some secret in the very shape of the universe hidden from the universe itself. Alone among the animals he feels the need of averting his thought from the root realities of his own bodily being; of hiding them as in the presence of some higher possibility which creates the mystery of shame.”

“Father Brown got to his feet, putting his hands behind him. 'Odd, isn't it,' he said, 'that a thief and a vagabond should repent, when so many who are rich and secure remain hard and frivolous, and without fruit for God or man?”

“I should say that there ought to be no war except religious war. If war is irreligious, it is immoral. No man ought ever to fight at all unless he is prepared to put his quarrel before that invisible Court of Arbitration with which all religion is concerned. Unless he thinks he is vitally, eternally, cosmically in the right, he is wrong to fire off a pocket-pistol.”