“Lord Peter Wimsey: Wait a second… I'm not sure that you haven't said something useful and important.
Lady Mary Wimsey: Everything I say is useful and important.”

“Lord Peter Wimsey: I always said the professional advocate was the most amoral person on the face of the earth. I'm certain of it now.”

“Lord Peter Wimsey: Trouble shared is trouble halved.”

“Lord Peter Wimsey: Wherever trouble turns up, there am I at the bottom of it.”

“Lord Peter Wimsey: He dogs my footsteps with the incompetent zeal of fifty Watsons.”

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

“Lord Peter Wimsey: The worst sin - perhaps the only sin - passion can commit, is to be joyless.”

“Lord Peter Wimsey: It’s my belief most of us would only be too pleased to chuck these community hysterics if the beastly newspapers didn’t run it for all it’s worth. However, it won’t do to say so. (on Remembrance Day observances)”

“Lord Peter Wimsey: The great advantage about telling the truth is that nobody ever believes it – that is at the bottom of the ψευδῆ λέγειν ὡς δεῖ.”

“Lord Peter Wimsey: I'm told I make love rather nicely. Though I am at a bit of a disadvantage at the moment. One can't be too convincing at the other end of the table with a bloke looking in the window.”