Speech ... is an invention of man's to prevent him from thinking.

Crime is terribly revealing. Try and vary your methods as you will, your tastes, your habits, your attitude of mind, and your soul is revealed by your actions.

Lie is more worth living, more full of interest when you are likely to lose it. It shouldn't be, perhaps, but it is. When you're young and strong and healthy, and life stretches ahead of you, living isn't really important at all. It's young people who commit suicide easily, out of despair from love, sometimes from sheer anxiety and worry. But old people know how valuable life is and how interesting. - Jane Marple

You don't realize what fine fighting material there is in age. ... You show me any one who's lived to over seventy and you show me a fighter - some one who's got the will to live.

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.

I learned ... that one can never go back, that one should not ever try to go back - that the essence of life is going forward. Life is really a one way street, isn't it?

I'm afraid of death... Yes, but that doesn't stop death coming.