To put it quite crudely ... the poor don't really know how the rich live, and the rich don't know how the poor live, and to find out is really enchanting to both of them.
I like to inquire into everything. Hercule Poirot is a good dog. The good dog follows the scent, and if, regrettably, there is no scent to follow, he noses around - seeking always something that is not very nice.
Women observe subconsciously a thousand little details, without knowing they are doing so. Their subconscious mind adds these little things together - and they call the result intuition.
I really cannot understand the point of what you're saying. Really,' said Clotilde, looking at her. 'What a very extraordinary person you are. What sort of a woman are you? Why are you talking like this? Who are you?' Miss Marple pulled down the mass of pink wool that encircled her head, a pink wool scarf of the same kind that she had once worn in the West Indies. 'One of my names,' she said, 'is Nemesis.' 'Nemesis? And what does that mean?' 'I think you know,' said Miss Marple. 'You are a very well educated woman. Nemesis is long delayed sometimes, but it comes in the end.
I suppose it is because nearly all children go to school nowadays and have things arranged for them that they seem so forlornly unable to produce their own ideas.
There are some people who don't conform to the signals. An ordinary well-regulated locomotive slows down or pulls up when it sees the red light hoisted against it. Perhaps I was born color blind. When I see the red signal -- I can't help forging ahead. And in the end, you know, that spells disaster.
I don't think necessity is the mother of invention. Invention, in my opinion, arises directly from idleness, possibly also from laziness - to save oneself trouble.
Then there are some minor points that strike me as suggestive - for instance, the position of Mrs. Hubbard's sponge bag, the name of Mrs. Armstrong's mother, the detective methods of Mr. Hardman, the suggestion of Mr. MacQueen that Ratchett himself destroyed the charred note we found, Princess Dragomiroff's Christian name, and a grease spot on a Hungarian passport.