“Salcombe Hardy groaned: "How long, O Lord, how long shall we have to listen to all this tripe about commercial arsenic? Murderers learn it now at their mother's knee.”

“Lord Peter Wimsey: Facts, Bunter, must have facts. When I was a small boy, I always hated facts. Thought they were nasty, hard things, all nobs. Mervyn Bunter: Yes, my lord. My old mother always used to say... Lord Peter Wimsey: Your mother, Bunter? Oh, I never knew you had one. I always thought you just sort of came along already-made, so it were. Oh, excuse me. How infernally rude of me. Beg pardon, I'm sure. Mervyn Bunter: That's all right, my lord. Lord Peter Wimsey: Thank you. Mervyn Bunter: Yes indeed, I was one of seven. Lord Peter Wimsey: That is pure invention, Bunter, I know better. You are unique. But you were going to tell me about your mater. Mervyn Bunter: Oh yes, my lord. My old mother always used to say that facts are like cows. If you stare them in the face hard enough, and they generally run away. Lord Peter Wimsey: By Jove, that's courageous, Bunter. What a splendid person she must be. Mervyn Bunter: I think so, my lord.”

“Still, it doesn't do to murder people, no matter how offensive they may be.”

“His [Lord Peter's] long, amiable face looked as if it had generated spontaneously from his top hat, as white maggots breed from Gorgonzola.”

“I say, I don’t think the human frame is very thoughtfully constructed for this sleuthhound business. If one could go on all fours, or had eyes in ones knees, it would be a lot more practical’… ‘What luck! Here’s a deep, damp ditch on the other side, which I shall now proceed to fall into.’ A slithering crash proclaimed that he had carried out his intention.”

“We shall know what things are of overmastering importance when they have overmastered us.”

“Wherever you find a great man, you will find a great mother or a great wife standing behind him -- or so they used to say. It would be interesting to know how many great women have had great fathers and husbands behind them.”