there is evil everywhere under the sun.

There are more important things than finding the murderer. And justice is a fine word, but it is sometimes difficult to say exactly what one means by it. In my opinion, the important thing is to clear the innocent. - Hercule Poirot

I am not mad. I am eccentric perhaps--at least certain people say so; but as regards my profession. I am very much as one says, 'all there.

Very few of us are what we seem.

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.

Everybody always knows something," said Adam, "even if it's something they don't know they know.

There is no detective in England equal to a spinster lady of uncertain age with plenty of time on her hands.