Spirit, Art, Reason

The concept of 'Spirit' is crucially undetermined in the Critique of Judgment, its only appearance in Kant's Critical trilogy.  For, as the animating principle of artistic creativity, it is the cause of both the quickening of the faculties culminating in judgments of Taste, and of further original productivity.  If so, then Aesthetic Judgment  is not sui generis, as his theory has it.  Furthermore, the relation between Spirit and Reason remains unexplored, beyond a few casual allusions to their identity.  Now, if they are one and the same, then Pure Practical Reason is an animating principle, and not merely a constraint on inclination.  In that case, both the standard interpretation of the Moral Law, and Kant's concept of Freedom, are inadequate to the creative originality of Reason.  So, in the absence of elaboration, his concept of Spirit seems to pose a significant challenge to two cardinal features of his system.