Below are a few thoughts on Fichte’s advance over Kant’s critical philosophy. I’m finding that there’s much in Fichte’s work that forms something of a historical starting point for my own work on concepts as capacities. There are substantial differences, too. For example, Fichte’s strong separation of the causal order of nature and the normative order of human freedom strikes me as implausible, and it would be hard to imagine a philosopher arguing the point with as much force today (though the exact way to think of this partition—or to not think it at all—continues to give everyone a headache).
That said, as I read them, the primary difference between Kant’s and Fichte’s philosophies lies in their differing starting points, in what a grounding for transcendental philosophy requires. If Kant was correct to say that experience has an a priori structure that conditions all possibilities of experience, he was wrong to suggest that this a priori structure—including the forms of intuition, the categories of the understanding, the ideas of reason, and the transcendental ego itself—could be taken as simply given. That is, in much the same way that Kant’s critical philosophy leads one to reject the mere givenness of empirical experience, this same rejection should be applied to the mere givenness of the a priori concepts and categories of the transcendental itself.