“Never do anything yourself that others can do for you.”

“As you yourself have said, what other explanation can there be?'Poirot stared straight ahead of him. 'That is what I ask myself,' he said. 'That is what I never cease to ask myself.”

“People will quite often do anything for money. - Jane Marple”

“I know when a couple are really in love with each other. And by that I do not mean just sexually attracted. There is too much talk about sex, too much attention is paid to it. I do not mean that anything about sex is wrong. That is nonsense. But sex cannot take the place of love, it goes with love, but cannot succeed by itself.”

“Oh no, I'm not brave. When a thing is certain there's nothing to be brave about. All you can do is to find your consolation.”

“Can one build an honest house on dishonest foundation? I do not know. But I do know that I want to try. (Edward Ferrier)”

“Do you not realize, Hastings, that each and everyone of us is a complete mystery with layers. We each try to judge each other, but nine times out of ten, we are wrong.”