I'm Not Often Bored,' I Assured Her.

I Do Not Argue With Obstinate Men. I Act In Spite Of Them.

Any Coincidencce Is Worth Noticing. You Can Throw It Away Later If It Is Only A Coincidence.

If You Are To Be Hercule Poirot, You Must Think Of Everything.

Books Are A Habit-forming Drug.

I Would Like It To Be Said That I Was A Good Writer Of Detective And Thriller Stories.