Deep layers of context are missed when cursorily reading for quantity at the expense of comprehension - only the vapid are impressed by those who try to squeeze as many books as possible into each passing month as if shoving one more oiled hot dog down the gullet in a food eating contest to prove accumulation superiority.
Description is what makes the reader a sensory participant in the story. Good description is a learned skill,one of the prime reasons you cannot succeed unless you read a lot and write a lot. It's not just a question of how-to, you see; it's a question of how much to. Reading will help you answer how much, and only reams of writing will help you with the how. You can learn only by doing.
He was a quick fellow, and when hot from play, would toss himself in a corner, and in five minutes be deep in any sort of book that he could lay his hands on: if it were Rasselas or Gulliver, so much the better, but Bailey's Dictionary would do, or the Bible with the Apocrypha in it. Something he must read, when he was not riding the pony, or running and hunting, or listening to the talk of men. All this was true of him at ten years of age; he had then read through Chrysal, or the Adventures of a Guinea, which was neither milk for babes, nor any chalky mixture meant to pass for milk, and it had already occurred to him that books were stuff, and that life was stupid.
The true reader reads every work seriously in the sense that he reads it whole-heartedly, makes himself as receptive as he can. But for that very reason he cannot possibly read every work solemly or gravely. For he will read 'in the same spirit that the author writ.'... He will never commit the error of trying to munch whipped cream as if it were venison.
(...) perfectly ordinary books, printed on commonplace paper in mundane ink. It would be a mistake to think that they weren't also dangerous, just because reading them didn't make fireworks go off in the sky. Reading them sometimes did the more dangerous trick of making fireworks go off in the privacy of the reader's brain.