Never do anything yourself that others can do for you.

One of us in this very room is in fact the murderer.

There is nothing more thrilling in this world, I think, than having a child that is yours, and yet is mysteriously a stranger.

It is deplorable...to remove all the romance - all the mystery!

I often wonder why the whole world is so prone to generalise. Generalisations are seldom if ever true and are usually utterly inaccurate.

I am not one to rely upon the expert procedure. It is the psychology I seek, not the fingerprint or the cigarette ash.

You cannot mix up sentiment and reason.