“It's so much nicer to be a secret and delightful sin to anybody than to be a feather in his cap.”

“Many homicidal lunatics are very quiet, unassuming people. Delightful fellows.”

“There is too much tendency to attribute to God the evils that man does of his own free will. I must concede you the Devil. God doesn't really need to punish us, Miss Barton. We're so busy punishing ourselves.”

“I gather," he added, "that you've never had much time to study the classics?""That is so.""Pity. Pity. You've missed a lot. Everyone should be made to study the classics, if I had my way."Poirot shrugged his shoulders."Eh bien, I have got on very well without them.""Got on! Got on? It's not a question of getting on. That's the wrong view all together. The classics aren't a ladder leading to quick success, like a modern correspondence course! It's not a man's working hours that are important--it's his leisure hours. That's the mistake we all make. Take yourself now, you're getting on, you'll be wanting to get out of things, to take things easy--what are you going to do then with your leisure hours?”

“Anybody who can belive six impossible things before breakfast wins hands down in this game.”

“Evil is not something superhuman, it's something less than human.”

“Be sure thy sin will find thee out.”