Graham Moore said this quote

Watson is a cheap, efficient little sod of a literary device. Holmes doesn't need him to solve crimes any more than he needs a ten-stone ankle weight. The audience, Arthur. The audience needs Watson as an intermediary, so that Holmes's thoughts might be forever kept just out of reach. If you told stories from Holmes's perspective, everyone would know what the bleeding genius was thinking the whole time. They'd have the culprit fingered on page one.

~ Graham Moore

Gray fall light came through the nine square glass panes. On days like this, the strips of white wood that separated the glass seemed brighter to the eye than did the window light.

~ Graham Moore

A mystifying sensation of loneliness shook him. Arthur had been alone before, to be sure, but to be alone while surrounded by people, the one sane man in a mad place - that was loneliness.

~ Graham Moore

In the darkest corner of a darkened room, all Sherlock Homes stories begin. In the pregnant dim of gaslight and smoke, Holmes would sit, digesting the day's papers, puffing on his long pipe, injecting himself with cocaine. He would pop smoke rings into the gloom, waiting for something, anything, to pierce into the belly of his study and release the promise of adventure; of clues to interpret; of, at last he would plead, a puzzle he could not solve. And after each story he would return here, into the dark room, and die day by day of boredom. The darkness of his study was his cage, but also the womb of his genius.

~ Graham Moore