Not who you're looking for? Others named The man who was Thursday: 1908 novel by G. K. Chesterton
“Perhaps we are both doing what we think right. But what we think right is so damned different that there can be nothing between us in the way of concession. There is nothing possible between us but honour and death.”
“I have the honour to be somewhat in the confidence of the chief of whom I have spoken. You should really come and see him. Or rather, I should not say see him, nobody ever sees him; but you can talk to him if you like.”
“There's one thing I'll tell you though about who I am. I am the man in the dark room, who made you all policemen.”
Quotes via Wikiquote (CC BY-SA), each with its original source.