RENAISSANCE COMPARED WITH GOTHIC AND ROMANESQUE units is essential. How then can the difference in principle be formu- lated between a Norman and a Renaissance church? Walls are equally important in both, whereas the Gothic style always en- deavours to invalidate them. But a Romanesque wall is primarily inert. If it is ornamented, the exact place where decoration is applied seems arbitrary. One hardly ever feels that a little more or a little less ornament, or ornament shifted to a slightly higher or slightly lower position, would make a decisive difference. In the Renaissance building this is not so. The walls appear active, enlivened by the decorative elements which in their sizes and arrangement follow laws of human reasoning. It is ultimately this humanising that makes a Renaissance building what it is. Arcades are airier and more open than they had been. The graceful columns have the beauty of animate beings. They keep to a human scale too, and as they lead from part to part, even when a building is very large, one is never overwhelmed by its sheer size. This, on the other hand, is just what the Norman architect wishes to achieve. He conceives a wall as a whole and then keeps the expression of might and mass to the smallest detail. Hence, one need scarcely add, Romanesque sculptors could not yet re- discover the beauty of the human body. This rediscovery, and the discovery of linear perspective, had to come with the Renaissance. 50. LEONE BATTISTA ALBERT!: S. ANDREA, MANTUA, BEGUN 1470, 91