Dickens overstrains and overstates a mood our period does not understand. The truth he exaggerates is exactly this old Revolution sense of infinite opportunity and boisterous brotherhood. And we resent his undue sense of it, because we ourselves have not even a due sense of it. We feel troubled with too much where we have too little; we wish he would keep it within bounds. For we are all exact and scientific on the subjects we do not care about. We all immediately detect exaggeration in an exposition of Mormonism or a patriotic speech from Paraguay. We all require sobriety on the subject of the sea-serpent. But the moment we begin to believe a thing ourselves, that moment we begin easily to overstate it; and the moment our souls become serious, our words become a little wild. And certain moderns are thus placed towards exaggeration. They permit any writer to emphasise doubts for instance, for doubts are their religion, but they permit no man to emphasise dogmas. If a man be the mildest Christian, they smell “cant;” but he can be a raving windmill of pessimism, and they call it “temperament.” If a moralist paints a wild picture of immorality, they doubt its truth, they say that devils are not so black as they are painted. But if a pessimist paints a wild picture of melancholy, they accept the whole horrible psychology, and they never ask if devils are as blue as they are painted.
— Charles Dickens (1906).