We ought to remain a little aloof and take pleasure in the aloofness, while at the same time we keenly enjoy (enjoy with tears and shivers) the interweave of a given masterpiece.
He wants to read it as apart from the emotions, although he wants to enlist those emotions in a very specific way. Those have to be the tears and shivers of impersonality. Impersonality as the ultimate stance of the artist.
The good, lasting stuff comes out of one’s individual imagination, and sensitivity to, and comprehension of, the sufferings of Everyman, not out of the memory of one’s own grief.