No violence, gentlemen — no violence, I beg of you! Consider the furniture!
Violence recoils on the violent.
As a rule, said Holmes, the more bizarre a thing is the less mysterious it proves to be. It is your commonplace, featureless crimes which are really puzzling, just as a commonplace face is the most difficult to identify.
His ignorance was as remarkable as his knowledge.
I cannot live without brainwork. What else is there to live for
The ideal reasoner, he remarked, would, when he had once been shown a single fact in all its bearings, deduce from it not only all the chain of events which led up to it but also all the results which would follow from it.