You are the patient one, Mademoiselle,' said Poirot to Miss Debenham. She shrugged her shoulders slightly. 'What else can one do?' You are a philosopher, Mademoiselle.' That implies a detached attitude. I think my attitude is more selfish. I have learned to save myself useless emotion.

The supernatural is only the natural of which the laws are not yet understood.

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 everyday.

It is odd how, when you have a secret belief of your own which you do not wish to acknowledge, the voicing of it by someone else will rouse you to a fury of denial.

Ah, but life is like that! It does not permit you to arrange and order it as you will. It will not permit you to escape emotion, to live by the intellect and by reason! You cannot say, 'I will feel so much and no more.' Life, Mr. Welman, whatever else it is, is not reasonable. [Hercule Poirot]

To keep something wild is far more difficult than to preserve it.

a lot of trouble has been caused by memoirs. Indiscreet revelations, that sort of thing. People who have been close as an oyster all their lives seem positively to relish causing trouble when they themselves shall be comfortably dead.