Every work of art must show on the face of it that it is such; and this can be done only through what we call sensuous beauty, or agreeableness. The ancients, far from entertaining the modern notion that a work of art must have the appearance of a work of nature, designated their works of art as such through an intentional arrangement of parts; by means of symmetry they rendered easy for the eye an insight into relations, and thus a complicated work was made comprehensible. Through symmetry and opposition slight deviations were made productive of the sharpest contrasts. The pains of the artist were most happily bestowed to place the masses in opposition to each other, and particularly in groups, to bring the extremities of the bodies against each other in a harmonious position; so that every work, when we disregard its import, and look only at its general outline from a distance, strikes the eye by its ornamental air. The antique vases furnish a hundred instances of this sort of agreeable composition, and perhaps it would be possible to exhibit a series of examples of symmetrically artistic and charming groupings, from the most quiet vase-sculptures up to the Laocoon. I shall therefore venture to repeat the assertion that the group of Laocoon, in addition to its other acknowledged merits, is at once a model of symmetry and variety, of repose and action, of contrast and gradation, which produce an impression partly sensible, partly spiritual, agreeably stimulate the imagination by the high pathos of the representation, and by their grace and beauty temper the storm of passion and suffering. It is a great advantage for a work of art to be self-included and complete. An object at rest, exhibiting simple being, is thus complete by and in itself. A Jupiter, the thunderbolt resting in his lap; a Juno, reposing in her majesty and feminine dignity; a Minerva, inwardly intent--are all subjects that have no impulse outwards, that rest upon and in themselves; the first, the most lovely subjects of sculpture. But within the noble round of the mythic circle of art, where these separate self-existent natures stand and rest, there are smaller circles, within which the figures are conceived and wrought out with reference to other figures; for example, the nine Muses, with their leader, Apollo, are each conceived and executed separately, but they become far more interesting in their complete and diversified choir. When art attempts scenes of exalted passion, it can treat them also in the same manner; it may either present to us a circle of figures holding a passionate relation to each other, like the Niobe and her children, pursued by Apollo and Diana, or exhibit in the same piece the action and the motive; we have in mind such groups as the graceful boy extracting the thorn from his foot, the wrestler, two groups of fawns and nymphs in Dresden, and the noble and animated group of Laocoon.