They say that genius is an infinite capacity for taking pains," he remarked with a smile. "It's a very bad definition, but it does apply to detective work.

He was, I take it, the most perfect reasoning and observing machine that the world has seen, but as a lover he would have placed himself in a false position. He never spoke of the softer passions, save with a gibe and a sneer. They were admirable things for the observer- excellent for drawing the veil from men's motives and actions. But for the trained observer to admit such intrusions into his own delicate and finely adjusted temperament was to introduce a distracting factor which might throw a doubt upon all his mental results. Grit in a sensitive instrument, or a crack in one of his own high-power lenses, would not be more disturbing than a strong emotion in a nature such as his.

You have been in Afghanistan I perceive.

I have always held, too, that pistol practice should be distinctly an open-air pastime; and when Homes, in one of his queer humours, would sit in an armchair with his hair-trigger and a hundred Boxer cartridges and proceed to adorn the opposite wall with a patriotic V.R. done in bullet pocks, I felt strongly that neither the atmosphere nor the appearance of our room was improved by it.

I'm not a psychopath, I'm a high-functioning sociopath. Do your research.

I am lost without my Boswell.

[Sherlock Holmes on Dr. Watson.]