iii. most spiritual mode of representation of the romantic art-type, we must look for it in _poetry_. Its characteristic peculiarity lies in the power with which it subjects to the mind and to its ideas the sensuous element from which music and painting in their degree began to liberate art. For sound, the only external matter which poetry retains, is in it no longer the feeling of the sonorous itself, but is a _sign_, which by itself is void of import. And it is a sign of the idea which has become concrete in itself and not merely of indefinite feeling and of its _nuances_ and grades. This is how sound develops into the _Word_, as voice articulate in itself, whose import it is to indicate ideas and notions. The merely negative point up to which music had developed now makes its appearance as the completely concrete point, the point which is mind, the self-conscious individual, which, producing out of itself the infinite space of its ideas, unites it with the temporal character of sound. Yet this sensuous element, which in music was still immediately one with inward feeling, is in poetry separated from the content of consciousness. In poetry the mind determines this content for its own sake, and apart from all else, into the shape of ideas, and though it employs sound to express them, yet treats it solely as a symbol without value or import. Thus considered, sound may just as well be reduced to a mere letter, for the audible, like the visible, is thus depressed into a mere indication of mind.[181] For this reason the proper medium of poetical representation is the poetical imagination and intellectual portrayal itself. And as this element is common to all types of art, it follows that poetry runs through them all and develops itself independently in each. Poetry is the universal art of the mind which has become free in its own nature, and which is not tied to find its realization in external sensuous matter, but expatiates exclusively in the inner space and inner time of the ideas and feelings. Yet just in this its highest phase art ends by transcending itself, inasmuch as it abandons the medium of a harmonious embodiment of mind in sensuous form, and passes from the poetry of imagination into the prose of thought.