There's too much tendency to attribute to God the evils that man does of his own free will.

One of the saddest things in life, is the things one remembers.

Is there ever any particular spot where one can put one's finger and say, "It all began that day, at such a time and such a place, with such an incident?

There is something about conscious tact that is very irritating.

One of us in this very room is in fact the murderer.

I have always been so sure - too sure... But now I am very humble and I say like a little child: "I do not know..."

Poirot said placidly, “One does not, you know, employ merely the muscles. I do not need to bend and measure the footprints and pick up the cigarette ends and examine the bent blades of grass. It is enough for me to sit back in my chair and think. It is this – ” he tapped his egg-shaped head – “this, that functions!