Holmes took up the stone and held it against the light. "It's a bonny thing," said he. "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's pet baits. In the larger and older jewels every facet may stand for a bloody deed. This stone is not yet twenty years old. It was found in the banks of the Amoy River in soutern China and is remarkable in having every characteristic of the carbuncle, save that it is blue in shade instead of ruby red. In spite of its youth, it has already a sinister history. There have been two murders, a vitriol-throwing, a suicide, and several robberies brought about for the sake of this forty-grain weight of crystallised charcoal. Who would think that so pretty a toy would be a purveyor to the gallows and the prison?

Our relationship with literary characters, at least to those that exercise a certain attraction over us, rests in fact on a denial. We know perfectly well, on a conscious level, that these characters “do not exist,” or in any case do not exist in the same way as do the inhabitants of the real world. But things manifest in an entirely different way on the unconscious level, which is interested not in the ontological differences between worlds but in the effect they produce on the psyche.Every psychoanalyst knows how deeply a subject can be influenced, and even shaped, sometimes to the point of tragedy, by a fictional character and the sense of identification it gives rise to. This remark must first of all be understood as a reminder that we ourselves are usually fictional characters for other people […]

Dr. Watson's summary list of Sherlock Holmes's strengths and weaknesses:"1. Knowledge of Literature: Nil.2. Knowledge of Philosophy: Nil.3. Knowledge of Astronomy: Nil.4. Knowledge of Politics: Feeble.5. Knowledge of Botany: Variable. Well up in belladonna, opium, and poisons generally. Knows nothing of practical gardening.6. Knowledge of Geology: Practical but limited. Tells at a glance different soils from each other. After walks has shown me splashes upon his trousers, and told me by their colour and consistence in what part of London he had received them.7. Knowledge of Chemistry: Profound.8. Knowledge of Anatomy: Accurate but unsystematic.9. Knowledge of Sensational Literature: Immense. He appears to know every detail of every horror perpetrated in the century.10. Plays the violin well.11. Is an expert singlestick player, boxer, and swordsman.12. Has a good practical knowledge of British law.

On westminster Bridge, Arthur was struck by the brightness of the streetlamps running across like a formation of stars. They shone white against the black coats of the marching gentlefold and fuller than the moon against the fractal spires of Westminster. They were, Arthur quickly realized, the new electric lights, which the city government was installing, avenue by avenue, square by square, in place of the dirty gas lamps that had lit London's public spaces for a century. These new electric ones were brighter. They were cheaper. They required less maintenance. And they shone farther into the dime evening, exposing every crack in the pavement, every plump turtle sheel of stone underfoot. So long to the faint chiaroscuro of London, to the ladies and gentlemen in black-on-black relief. So long to the era of mist and carbonized Newcastle coal, to the stench of the Blackfriars foundry. Welcome to the cleasing glare of the twentieth century.