If you are to be Hercule Poirot, you must think of everything.

There is nothing more thrilling in this world, I think, than having a child that is yours, and yet is mysteriously a stranger.

"Look here," I said, "people like to collect disasters."

I specialize in murders of quiet, domestic interest.

It's astonishing in this world how things don't turn out at all the way you expect them to.

The happy people are failures because they are on such good terms with themselves they don't give a damn.

I always take abroad with me one really good soft pillow--to me it makes all the difference between comfort and misery.