In this way he sums up for them the whole character of medieval art itself in that which distinguishes it most clearly from classical work, the presence of a convulsive energy in it, becoming [74] in lower hands merely monstrous or forbidding, and felt, even in its most graceful products, as a subdued quaintness or grotesque. Yet those who feel this grace or sweetness in Michelangelo might at the first moment be puzzled if they were asked wherein precisely such quality resided. Men of inventive temperament-- Victor Hugo, for instance, in whom, as in Michelangelo, people have for the most part been attracted or repelled by the strength, while few have understood his sweetness--have sometimes relieved conceptions of merely moral or spiritual greatness, but with little aesthetic charm of their own, by lovely accidents or accessories, like the butterfly which alights on the blood-stained barricade in Les Misérables, or those sea-birds for whom the monstrous Gilliatt comes to be as some wild natural thing, so that they are no longer afraid of him, in Les Travailleurs de la Mer. But the austere genius of Michelangelo will not depend for its sweetness on any mere accessories like these. The world of natural things has almost no existence for him; "When one speaks of him," says Grimm, "woods, clouds, seas, and mountains disappear, and only what is formed by the spirit of man remains behind"; and he quotes a few slight words from a letter of his to Vasari as the single expression in all he has left of a feeling for nature. He has traced no flowers, like those with which Leonardo stars [75] over his gloomiest rocks; nothing like the fret-work of wings and flames in which Blake frames his most startling conceptions. No forest-scenery like Titian's fills his backgrounds, but only blank ranges of rock, and dim vegetable forms as blank as they, as in a world before the creation of the first five days.