“The man who came into the room did not look as though his name was, or could have ever been, Robinson. It might have been Demetrius, or Isaacstein, or Perenna - though not one or the other in particular. He was not definitely Jewish, nor definitely Greek nor Portugese nor Spanish, nor South American. What did seem highly unlikely was that he was an Englishman called Robinson.”
“Instinct is a marvelous thing. It can neither be explained nor ignored.”
“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.”
“Nothing is so sad, in my opinion, as the devastation wrought by age. My poor friend. I have described him many times. Now to convey to you the difference. Crippled with arthritis, he propelled himself about in a wheelchair. His once plump frame had fallen in. He was a thin little man now. His face was lined and wrinkled. His moustache and hair, and hair, it is true, were still of a jet black colour, but candidly, though I would not for the world have hurt his feelings by saying so to him, this was a mistake. There comes a moment when hair dye is only too painfully obvious. There had been a time when I had been surprised to learn that the blackness of Poirot's hair came out of a bottle. But now the theatricality was apparent and merely created the impression that he wore a wig and had adorned his upper lip to amuse children!”
“Me and my old man went on a coach trip to Switzerland and Italy once and it was a whole hour further on there. Must be something to do with this Common Market. I don't hold with the Common Market and nor does Mr. Curtain. England's good enough for me.”
“Heather Badcock meant no harm. She never did mean harm, but there is no doubt that people like Heather Badcock (and like my old friend Alison Wilde), are capable of doing a lot of harm because they lack - not kindness, they have kindness - but any real consideration for the way their actions may affect other people. She though always of what an action meant to her, never sparing a thought to what it might mean to somebody else.”
“Poirot's eyes opened. "That is great ferocity," he said."It is a woman," said the chef de train, speaking for the first time. "Depend upon it, it was a woman. Only a woman would stab like that."Dr. Constantine screwed up his face thoughtfully. "She must have been a very strong woman," he said. "It is not my desire to speak technically-that is only confusing; but I can assure you that two of the blows were delivered with such forces as to drive them through hard belts of bone and muscle.""It was clearly not a scientific crime," said Poirot."It was most unscientific," returned Dr. Constantine."The blows seem to have been delivered haphazard and at random. Some have glanced off, doing hardly any damage. It is as though somebody had shut his eyes and then in a frenzy struck blindly again and again.""C'est une femme," said the chef de train again. "Women are like that. When they are enraged they have great strength." He nodded so sagely that everyone suspected a personal experience of his own.”