“Time is the best killer.”
“I've heard that you're the cat's whiskers, M. Poirot.""Comment? The cat's whiskers? I do not understand.""Well that you're It.""Madame, I may or may not have brains - as a matter of fact I have - why pretend?”
“He laughs best who laughs at the end.”
“People should be interested in books, not their authors.”
“There is the natural liar...Always says the thing that sounds best.”
“It had come about exactly in the way things happened in books.”