I think you want a little unofficial help. Three undetected murders in one year won't do, Lestrade. But you handled the Molesey Mystery with less than your usual - that's to say, you handled it fairly well.

There was a brisk northern wind, heavy and wet with the salt of the sea, and he felt, as he turned his face to it, fresh life and strength surging in his blood and bracing his limbs.

All other men are specialists, but his specialism is omniscience.

His love of danger, his intense appreciation of the drama of an adventure--all the more intense for being held tightly in--his consistent view that every peril in life is a form of sport, a fierce game betwixt you and Fate, with Death as a forfeit, made him a wonderful companion at such hours.

What one man can invent, another can discover.

Our ideas must be as broad as Nature if they are to interpret Nature.

Detection is, or ought to be, an exact science, and should be treated in the same cold and unemotional manner.