“Fey...a Scotch word...It means the kind of exalted happiness that comes before disaster. You know--it's too good to be true.”

“Trains are relentless things, aren't they, Monsieur Poirot? People are murdered and die, but they go on just the same. I am talking nonsense, but you know what I mean.""Yes, yes, I know. Life is like a train, Mademoiselle. It goes on. And it is a good thing that that is so.""Why?""Because the train gets to its journey's end at last, and there is a proverb about that in your language, Mademoiselle.""'Journey's end in lovers meeting.'" Lenox laughed. "That is not going to be true for me.""Yes--yes, it is true. You are young, younger than you yourself know. Trust the train, Mademoiselle, for it is le bon Dieu who drives it."The whistle of the engine came again."Trust the train, Mademoiselle," murmured Poirot again. "And trust Hercule Poirot. He knows.”

“It's really very unpleasant. And not being able to say anything to answer back makes it rankle more, if you know what I mean.”

“It's what's in yourself that makes you happy or unhappy.”

“You're very young...you haven't got to that yet. But it does come! The blessed relief when you know that you've done with it all - that you haven't got to carry the burden any longer. You'll feel that too someday...”

“Intuition is like reading a word without having to spell it out. A child can't do that because it has had so little experience. A grown-up person knows the word because they've seen it often before.”

“I know when a couple are really in love with each other. And by that I do not mean just sexually attracted. There is too much talk about sex, too much attention is paid to it. I do not mean that anything about sex is wrong. That is nonsense. But sex cannot take the place of love, it goes with love, but cannot succeed by itself.”