artistic enjoyment, inasmuch as things are only presented to this sense in so far as they are themselves in a condition of process, and are dissolved through the air and its direct influence. _Sight_, on the other hand, possesses a purely ideal relation to objects by means of light, a material, which is at the same time immaterial, and which suffers on its part the objects to continue in their free self-subsistence, making them appear and re-appear, but which does not, as the atmosphere or fire does, consume them actively either by imperceptible degrees or patently. Everything, then, is an object of the appetiteless vision, which materially exists in Space as a disparate aggregate, which, however, in so far as it remains unimpaired in its integrity, merely is disclosed in its form and colour. The remaining ideal sense is _hearing._ This is in signal contrast to the one just described. Hearing is concerned with the tone, rather than the form and colour of an object, with the vibration of what is corporeal; it requires no process of dissolution, as the sense of smell requires, but merely a trembling of the object, by which the same is in no wise impoverished. This ideal motion, in which through its sound what is as it were the simple individuality[17], the soul of the material thing expresses itself, the ear receives also in an ideal way, just as the eye shape and colour, and suffers thereby what is ideal or not external in the object to appeal to what is spiritual or non-corporeal. As a third accretion to these two senses we have the _sensuous conception_, memory, the retention of images, which appear in consciousness by means of the isolated perception, in this way subsumed under universals, and become related and united to the same by means of the imagination, so that now in one particular aspect the external reality itself exists both as ideal and spiritual, while that which is spiritual from another point of view accepts under the imaginative conception the form of what is external, and is brought to consciousness as a disparate and correlated aggregate.