Read it through once

With Mr. Cable along to see for you, and describe and explain and illuminate, a jog through that old quarter is a vivid pleasure. And you have a vivid sense as of unseen or dimly seen things--vivid, and yet fitful and darkling; you glimpse salient features, but lose the fine shades or catch them imperfectly through the vision of the imagination: a case, as it were, of ignorant near-sighted stranger traversing the rim of wide vague horizons of Alps with an inspired and enlightened long-sighted native.