“Crowding is what Keats meant when he told poets to ‘load every rift with ore’, … never use ten vague words when two will do…Vivid, exact, accurate, concrete, dense, rich: these words describe a prose that is crowded with sensations, meanings and implications…
“But leaping is just as important. What you leap over is what you leave out. And what you leave out is infinitely more important than what you leave in. Listing is not describing. Only the relevant belongs. Some say God is in the details; some say the Devil is in the details. Both are correct.”
from Steering the craft by Ursula Le Guin, in a chapter called ‘Crowding and Leaping’.