A man always finds it hard to realize that he may have finally lost a woman's love, however badly he may have treated her.

My name is Sherlock Holmes. It is my business to know what other people do not know.

The best way of successfully acting a part is to be it.

Just see how it glints and sparkles. Of course it is a nucleus and focus of crime. Every good stone is. They are the devil

Nothing clears up a case so much as stating it to another person.

Still, it is an error to argue in front of your data. You find yourself insensibly twisting them round to fit your theories.

Depend upon it, there is nothing so unnatural as the commonplace.