Hercule Poirot: I am an imbecile. I see only half of the picture. Miss Lemon: I don't even see that.

That is why most great love stories are tragedies.

One must accept the fact that we have only one companion in this world, a companion who accompanies us from the cradle to the grave - our own self. Get on good terms with that companion - learn to live with yourself.

They tried to be too clever---and that was their undoing.

there is no fanatic like a religious fanatic.

Everyone likes talking about himself. - Hercule Poirot

The amount of missing girls I've had to trace and their family and their friends always say the same thing. 'She was a bright and affectionate disposition and had no men friends'. That's never true. It's unnatural. Girls ought to have men friends. If not, then there's something wrong about them.