“Wherever there was a group of people, and a treasure to be administered, there Peter knew was backbiting and scandal and intriguing and spying, and a chance for somebody whose brains were "all there."”

“All a guy needed was a chance. Somebody was alway controlling who got a chance and who didn't.”

“I truly wish with all my heart that universal salvation were true. But to pretend that people are not sinful and in need of salvation would be as cruel and deceptive as pretending that somebody was healthy even though you knew that he had a fatal disease for which you knew the cure.”

“Wherever there is somebody else, a war is not far away.”

“Every spy and saboteur knew what he had to expect when he was arrested.”

“Living, just by itself - what a dirge that is! Life is a classroom and Boredom's the usher, there all the time to spy on you; whatever happens, you've got to look as if you were awfully busy all the time doing something that's terribly exciting - or he'll come along and nibble your brain.”

““So, his Slavonic Majesty hires thieves to spy for him. Spying is such a foul business that I am surprised that even a good Angevin thief would stoop to it.” He turned to Lord Peter with a sudden realization. “I’m sorry,” he said. “I didn’t mean to imply—”
”That’s all right, Your Highness,” Lord Peter said. “It’s a common reaction. Their spies are dirty, filthy scum, not fit to wipe your boots on, while our spies are noble gentlemen doing dangerous work for the love of King and Country. Would that it were so, Your Highness, but I’m afraid that sometimes the desired image is at fault—in both directions.””

“People whose freedom is taken away always end up hating somebody.”

“So I stepped away, reminding myself that when you're a spy, sometimes all you can do is go on. One foot in front of the other, wherever the narrow path might lead.”

“Lord Peter Wimsey: The first thing a principle does — if it really is a principle — is to kill somebody.”