Father Brown

"For it seems to me that you only pardon the sins that you don't really think sinful. You only forgive criminals when they commit what you don't regard as crimes, but rather as conventions. So you tolerate a conventional duel, just as you tolerate a conventional divorce. You forgive because there isn't anything to be forgiven."

"She hasn't got any intellect to speak of; but you don't need any intellect to be an intellectual."

"It isn't that they can't see the solution. It is that they can't see the problem."