“His eye brings in almost too rich a harvest for him to deal with, and gives him an aloofness and a hardness which freeze his sentimentalism and make it seem a concession to the public, a veil thrown over the penetrating glance which left to itself pierced to the bone. With such a power at his command Dickens made his books blaze up, not by tightening the plot or sharpening the wit, but by throwing another handful of people on the fire.”

Source: Wikiquote