He is the Napoleon of crime, Watson. He is the organizer of half that is evil and nearly all that is undetected in this great city. He is a genius, a… - Arthur Conan Doyle

How often have I said to you that when you have eliminated the impossible whatever remains, HOWEVER IMPROBABLE, must be the truth?

"We're at close grips at last," said Holmes as we walked together across the moor. "What a nerve the fellow has! How he pulled himself together in the face of what must have been a paralyzing shock when he found that the wrong man had fallen a victim to his plot. I told you in London, Watson, and I tell you now again, that we have never had a foeman more worthy of our steel."

"...Recognising, as I do, that you are the second highest expert in Europe — "
"Indeed, sir! May I inquire who has the honour to be the first?" Asked Holmes, with some asperity.
"To the man of precised, scientific mind the work of Monsieur Bertillon must always appeal strongly."
"Then had you not better consult him?"
"I said, sir, to the precisely scientific mind. But as a practical man of affairs it is acknowledged that you stand alone. I trust, sir, that I have not inadvertently — "
"Just a little," said Holmes.