Instinct is a marvelous thing. It can neither be explained nor ignored.

There are more important things than finding the murderer. And justice is a fine word, but it is sometimes difficult to say exactly what one means by it. In my opinion, the important thing is to clear the innocent. - Hercule Poirot

Trains are wonderful.... To travel by train is to see nature and human beings, towns and churches and rivers, in fact, to see life.

I have enjoyed greatly the second blooming that comes when you finish the life of the emotions and of personal relations; and suddenly find - at the age of fifty, say - that a whole new life has opened before you, filled with things you can think about, study, or read about...It is as if a fresh sap of ideas and thoughts was rising in you.

Words are such uncertain things, they so often sound well but mean the opposite of what one thinks they do.

Every man should have aunts. They illustrate the triumph of guess work over logic.

In my end is my beginning - that's what people are always saying. But what does it mean?