“Poirot said placidly, “One does not, you know, employ merely the muscles. I do not need to bend and measure the footprints and pick up the cigarette ends and examine the bent blades of grass. It is enough for me to sit back in my chair and think. It is this – ” he tapped his egg-shaped head – “this, that functions!”

“Life can be very terrible," he said. "One needs much courage.""To kill oneself? yes, I suppose one does.""Also to live," said Poirot, "one needs courage.”

“Poirot," I said. "I have been thinking.""An admirable exercise my friend. Continue it.”

“You've a pretty good nerve," said Ratchett. "Will twenty thousand dollars tempt you?"It will not."If you're holding out for more, you won't get it. I know what a thing's worth to me."I, also M. Ratchett."What's wrong with my proposition?"Poirot rose. "If you will forgive me for being personal - I do not like your face, M. Ratchett," he said.”

“So you think that the coco- mark well what I say, Hastings, the coco- contained strychnine?" "Of course! That salt on the tray, what else could it have been?" "It might have been salt." replied Poirot placidly.”

“You are the patient one, Mademoiselle,' said Poirot to Miss Debenham.She shrugged her shoulders slightly. 'What else can one do?'You are a philosopher, Mademoiselle.'That implies a detached attitude. I think my attitude is more selfish. I have learned to save myself useless emotion.”

“About Miss Debenham," he said rather awkwardly. "You can take it from me that she's all right. She's a pukka sahib."What," asked Dr. Constantine with interest, "does a pukka sahib mean?""It means," said Poirot, "that Miss Debenham's father and brothers were at the same kind of school as Colonel Arbuthnot was.""Oh!" said Dr. Constantine, disappointed. "Then it has nothing to do with the crime at all.""Exactly," said Poirot.”