Youth is a failing only too easily outgrown.

A mother's love for her child is like nothing else in the world. It knows no law, no pity, it dares all things and crushes down remorselessly all that stands in its path.

Women can accept the fact that a man is a rotter, a swindler, a drug taker, a confirmed liar, and a general swine, without batting an eyelash, and without its impairing their affection for the brute in the least. Women are wonderful realists.

There are many things that are unbelievable. Especially before breakfast, is it not? That is what one of your classics says. Six impossible things before breakfast.

Who are you? You don't belong to the police?' 'I am better than the police,' said Poirot. He said it without conscious arrogance. It was, to him, a simple statement of fact.

Things never come when they are expected.

Nothing, I believe, is so full of life under the microscope as a drop of water from a stagnant pool.