XXXIV. Under these limitations, then, I think that perfect sculpture may be made a part of the severest architecture; but this perfection was said in the outset to be dangerous. It is so in the highest degree; for the moment the architect allows himself to dwell on the imitated portions, there is a chance of his losing sight of the duty of his ornament, of its business as a part of the composition, and sacrificing its points of shade and effect to the delight of delicate carving. And then he is lost. His architecture has become a mere framework for the setting of delicate sculpture, which had better be all taken down and put into cabinets. It is well, therefore, that the young architect should be taught to think of imitative ornament as of the extreme of grace in language; not to be regarded at first, not to be obtained at the cost of purpose, meaning, force, or conciseness, yet, indeed, a perfection--the least of all perfections, and yet the crowning one of all--one which by itself, and regarded in itself, is an architectural coxcombry, but is yet the sign of the most highly-trained mind and power when it is associated with others. It is a safe manner, as I think, to design all things at first in severe abstraction, and to be prepared, if need were, to carry them out in that form; then to mark the parts where high finish would be admissible, to complete these always with stern reference to their general effect, and then connect them by a graduated scale of abstraction with the rest. And there is one safeguard against danger in this process on which I would finally insist. Never imitate anything but natural forms, and those the noblest, in the completed parts. The degradation of the cinque cento manner of decoration was not owing to its naturalism, to its faithfulness of imitation, but to its imitation of ugly, i.e. unnatural things. So long as it restrained itself to sculpture of animals and flowers, it remained noble. The balcony, on the opposite page, from a house in the Campo St. Benedetto at Venice, shows one of the earliest occurrences of the cinque cento arabesque, and a fragment of the pattern is given in Plate XII. fig. 8. It is but the arresting upon the stone work of a stem or two of the living flowers, which are rarely wanting in the window above (and which, by the by, the French and Italian peasantry often trellis with exquisite taste about their casements). This arabesque, relieved as it is in darkness from the white stone by the stain of time, is surely both beautiful and pure; and as long as the renaissance ornament remained in such forms it may be beheld with undeserved admiration. But the moment that unnatural objects were associated with these, and armor, and musical instruments, and wild meaningless scrolls and curled shields, and other such fancies, became principal in its subjects, its doom was sealed, and with it that of the architecture of the world.