It is impossible to enumerate all the various attitudes assumed by this conception of Aesthetic, which we will call _mystical_. We are here in the kingdom, not of the science of imagination, but of imagination itself, which creates its world with the varying elements of the impressions and of the feelings. Let it suffice to mention that this mysterious faculty has been conceived, now as practical, now as a mean between the theoretic and the practical, at others again as a theoretic grade together with philosophy and religion. [Sidenote] _Mortality and immortality of art._ The immortality of art has sometimes been deduced from this last conception as belonging with its sisters to the sphere of absolute spirit. At other times, on the other hand, when religion has been looked upon as mortal and as dissolved in philosophy, then the mortality, even the actual death, or at least the agony of art has been proclaimed. These questions have no meaning for us, because, seeing that the function of art is a necessary grade of the spirit, to ask if art can be eliminated is the same thing as asking if sensation or intelligence can be eliminated. But metaphysic, in the above sense, since it transplants itself to an arbitrary world, is not to be criticized in detail, any more than one can criticize the botany of the garden of Alcina or the navigation of the voyage of Astolfo. Criticism can only be made by refusing to join the game; that is to say, by rejecting the very possibility of metaphysic, always in the sense above indicated. As we do not admit intellectual intuition in philosophy, we can also not admit its shadow or equivalent, aesthetic intellectual intuition, or any other mode by which this imaginary function may be called and represented. We repeat again that we do not know of a fifth grade beyond the four grades of spirit which consciousness reveals to us. IX INDIVISIBILITY OF EXPRESSION INTO MODES OR GRADES AND CRITIQUE OF RHETORIC [Sidenote] _The characteristics of art._