Most successes are unhappy. That's why they are successes - they have to reassure themselves about themselves by achieving something that the world will notice.

To every problem, there is a most simple solution.

One of the oddest things in life, as we all know, is the way that when you have heard a thing mentioned, within twenty-four hours you nearly always come across it again.

If one sticks too rigidly to one's principles, one would hardly see anybody.

She didn't give George any too easy a time when she was alive. She was one of those semi-invalids – I believe she had really something wrong with her, but whatever it was she played it for all it was worth. She was capricious, exacting, unreasonable. She complained from morning to night. George was expected to wait on her, hand and foot and everything he did was always wrong and he got cursed for it. Most men, I'm fully convinced, would have hit her with a hatchet long ago.

My remarks are, as always, apt, sound, and to the point. (Hercule Poirot)

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.