5. Such we may take to be the articulated totality of the particular arts, viz. the external art of architecture, the objective art of sculpture, and the subjective art of painting music and poetry. Many other classifications have been attempted, for a work of art presents so many aspects, that, as has often been the case, first one and then another is made the basis of classification. For instance, one might take the sensuous medium. Thus architecture is treated as crystallization; sculpture, as the organic modelling of the material in its sensuous and spatial totality; painting, as the coloured surface and line; while in music, space, as such, passes into the point of time possessed of content within itself, until finally the external medium is in poetry depressed into complete insignificance. Or, again, these differences have been considered with reference to their purely abstract attributes of space and time. Such abstract peculiarities of works of art may, like their material medium, be consistently explored in their characteristic traits; but they cannot be worked out as the ultimate and fundamental law, because any such aspect itself derives its origin from a higher principle, and must therefore be subordinate thereto. This higher principle we have found in the types of art--symbolic, classical, and romantic--which are the universal stages or elements[182] of the Idea of beauty itself. For _symbolic art_ attains its most adequate reality and most complete application in _architecture_, in which it holds sway in the full import of its notion, and is not yet degraded to be, as it were, the inorganic nature dealt with by another art. The _classical_ type of art, on the other hand, finds adequate realization in sculpture, while it treats architecture only as furnishing an enclosure in which it is to operate, and has not acquired the power of developing painting and music as absolute[183] forms for its content. The _romantic_ type of art, finally, takes possession of painting and music, and in like manner of poetic representation, as substantive and unconditionally adequate modes of utterance. Poetry, however, is conformable to all types of the beautiful, and extends over them all, because the artistic imagination is its proper medium, and imagination is essential to every product that belongs to the beautiful, whatever its type may be. And, therefore, what the particular arts realize in individual works of art, are according to their abstract conception simply the universal types which constitute the self-unfolding Idea of beauty. It is as the external realization of this Idea that the wide Pantheon of art is being erected, whose architect and builder is the spirit of beauty as it awakens to self-knowledge, and to complete which the history of the world will need its evolution of ages. FOOTNOTES: [1] New York, Appleton and Co. [2] Chicago, Griggs and Co., 1885. [3] Edinburgh, Oliver and Boyd, 1886.