Agatha Christie

Fear is incomplete knowledge.

One must accept the fact that we have only one companion in this world, a companion who accompanies us from the cradle to the grave - our own self. Get on good terms with that companion - learn to live with yourself.

The human face is, after all, nothing more nor less than a mask.

To know when to use the truth is the essence of successful deception.

Good advice is always certain to be ignored, but that's no reason not to give it.

Never go back to a place where you have been happy. Until you do it remains alive for you. If you go back it will be destroyed.

As life goes on it becomes tiring to keep up the character you invented for yourself, and so you relapse into individuality and become more like yourself every day.

Assumptions are dangerous things.

The young people think the old people are fools -- but the old people know the young people are fools.

To every problem, there is a most simple solution.

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

To rush into explanations is always a sign of weakness.

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.

No one human being knows the full truth about another human being.

It's what's in yourself that makes you happy or unhappy.

Courage is the resolution to face the unforeseen.

When a man's neck's in danger, he doesn't stop to think too much about sentiment.

Many homicidal lunatics are very quiet, unassuming people. Delightful fellows.

There is too much tendency to attribute to God the evils that man does of his own free will. I must concede you the Devil. God doesn't really need to punish us, Miss Barton. We're so busy punishing ourselves.

To care passionately for another human creature brings always more sorrow than joy; but at the same time, Elinor, one would not be without experience. Anyone who has never really loved has never really lived.