Kant does not need to mount a separate argument for transcendental idealism in the Transcendental Analytic, because while that is aimed at showing that the use of certain concepts (the categories of pure understanding) and principles (the principles of pure understanding) are necessary conditions of any cognition of objects at all, indeed of self-consciousness (apperception) itself, but also yield knowledge only when applied to intuitions, pure intuitions in the case of pure mathematical cogniti