Florence, looks as if it had been gashed and hacked with a blunt knife when seen in the cast at the usual height in an ordinary light. Now this subtle circumventing of distance, height, and darkness; this victory of pattern over place; this reducing of light and shadow into tools for the sculptor, mean, as we see from the above examples, sacrificing the reality to the appearance, altering the proportions and planes so rigorously reproduced by the Greeks, mean sacrificing the sacred absolute form. And such a habit of taking liberties with what can be measured by the hand, in order to please the eye, allowed the sculptors of the Renaissance to think of their model no longer as the homogeneous _white man_ of the Greeks, but as a creature in whom structure was accentuated, intensified, or contradicted by colour and texture. Furthermore, these men of the fifteenth century possessed the cunning carving which could make stone vary in texture, in fibre, and almost in colour. A great many biographical details substantiate the evidence of statues and busts that the sculptors of the Renaissance carried on their business in a different manner from the ancient Greeks. The great development in Antiquity of the art of casting bronze, carried on everywhere for the production of weapons and household furniture, must have accustomed Greek sculptors (if we may call them by that name) to limit their personal work to the figure modelled in clay. And the great number of their works, many tediously constructed of ivory and gold, shows clearly that they did not abandon this habit in case of marble statuary, but merely gave the finishing strokes to a copy of their clay model, produced by workmen whose skill must have been fostered by the apparently thriving trade in marble copies of bronzes.