“Very few of us are what we seem.”

“One of us in this very room is in fact the murderer.”

“Human curiosity. Such a very interesting thing. Think of what we owe to it throughout history. It is said to be usually associated with the cat. Curiosity killed the cat. But I should say really that the Greeks were the inventors of curiosity.”

“It often seems to me that's all detective work is, wiping out your false starts and beginning again.""Yes, it is very true, that. And it is just what some people will not do. They conceive a certain theory, and everything has to fit into that theory. If one little fact will not fit it, they throw it aside. But it is always the facts that will not fit in that are significant.”

“What are you doing, Poirot?""I dissect rucksacks. It is very interesting.”

“At a small table, sitting very upright, was one of the ugliest old ladies he had ever seen. It was an ugliness of distinction- it fascinated rather than repelled. She sat very upright. Round her neck was a collar of very large pearls which, improbable though it seemed, were real. Her hands were covered with rings. Her sable coat was pushed back on her shoulders. A very small and expensive black toque was hideously unbecoming to the yellow, toad-like face beneath it.”

“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.”