There is nothing so dangerous for anyone who has something to hide as conversation!... A human being, Hastings, cannot resist theopportunity to reveal himself and express his personality which conversation gives him. Every time he will give himself away.

Men don't understand how their mannerisms can get on women's nerves so that you feel you just have to snap.

Surfing is like that. You are either vigorously cursing or else you are idiotically pleased with yourself.

Truth, however bitter, can be accepted, and woven into a design for living.

Vous eprouves trop d'emotion, Hastings, It affects your hands and your wits. Is that a way to fold a coat? And regard what you have done to my pyjamas. If the hairwash breaks what will befall them?' 'Good heavens, Poirot,' I cried, 'this is a matter of life and death. What does it matter what happens to our clothes?' 'You have no sense of proportion Hastings. We cannot catch a train earlier than the time that it leaves, and to ruin one's clothes will not be the least helpful in preventing a murder.

The saddest thing in life and the hardest to live through, is the knowledge that there is someone you love very much whom you cannot save from suffering.

The tragedy of life is that people do not change.