Beastly things, teeth. Give us trouble from the cradle to the grave.

The popular idea that a child forgets easily is not an accurate one. Many people go right through life in the grip of an idea which has been impressed on them in very tender years.

... nothing is so boring as devotion.

In my end is my beginning - that's what people are always saying. But what does it mean?

Money ... is always the great clue to what is happening in the world.

You are the patient one, Mademoiselle,' said Poirot to Miss Debenham. She shrugged her shoulders slightly. 'What else can one do?' You are a philosopher, Mademoiselle.' That implies a detached attitude. I think my attitude is more selfish. I have learned to save myself useless emotion.

Speech ... is an invention of man's to prevent him from thinking.