It is quite a three pipe problem, and I beg that you won't speak to me for fifty minutes.

The more featureless and commonplace a crime is, the more difficult it is to bring it home.

Evil indeed is the man who has not one woman to mourn him.

My business is that of every other good citizen - to uphold the law.

No violence, gentlemen — no violence, I beg of you! Consider the furniture!

Living, as I do, in an educated and scientific atmosphere, I could not have conceived that the first principles of zoology were so little known. Is it possible that you do not know the elementary fact in comparative anatomy, that the wing of a bird is really the forearm, while the wing of a bat consists of three elongated fingers with membranes between?

It is of the highest importance in the art of detection to be able to recognise out of a number of facts which are incidental and which are vital.