When you find that people are not telling you the truth---look out!

My remarks are, as always, apt, sound, and to the point. (Hercule Poirot)

the science of tomorrow is the supernatural of today.

One doesn't recognize the really important moments in one's life until it's too late.

Never worry about what you say to a man. They're so conceited that they never believe you mean it if it's unflattering.

There was a moment when I changed from an amateur to a professional. I assumed the burden of a profession, which is to write even when you don't want to, don't much like what you're writing, and aren't writing particularly well

I've always believed in writing without a collaborator, because where two people are writing the same book, each believes he gets all the worry and only half the royalties.