I have often had occasion to notice how, where a direct question would fail to elicit a response, a false assumption brings instant information in the form of a contradiction.

Talk and tea is his specialty," said Giles. "He has about five cups of tea a day. But he works splendidly when we are looking.

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

Everyone likes talking about himself. - Hercule Poirot

Jealousy, you know, is usually not an affair of causes. It is much more-how shall I say?-fundamental than that. Based on the knowledge that one's love is not returned. And so one goes on waiting, watching, expecting...that the loved one will turn to someone else.

I would like it to be said that I was a good writer of detective and thriller stories.

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