“A man must be prepared not only to be a martyr, but to be a fool. It is absurd to say that a man is ready to toil and die for his convictions if he is not even ready to wear a wreathe around his head for them.”

“For he was a sincere man, and in spite of his superficial airs and graces, at root a humble one. And it is always the humble man who talks too much; the proud man watches himself too closely. ”

“It is always the secure who are humble.”

“Pokój bez książek to jak ciało bez duszy”

“I am more than a devil; I am a man. I can do the one thing which Satan himself cannot do— I can die.”

“Are you a devil?""I am a man," answered Father Brown gravely; "and therefore have all devils in my heart.”

“there are many kinds of sincerity and insincerity. When you say 'thank you' for the salt, do you mean what you say ? No. When you say 'the world is round,' do you mean what you say ? No. It is true, but you don't mean it”