We owe most of our great inventions and most of the achievements of genius to idleness either enforced or voluntary.

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

It is my experience that no one, in the course of conversation, can fail to give themselves away sooner or later. Everyone has an irresistible urge to talk about themselves.

One is alone when the last one who remembers is gone.

You should employ your little grey cells.

Authors were shy, unsociable creatures, atoning for their lack of social aptitude by inventing their own companions and conversations.

The best time to plan a book is while you're doing the dishes.