Kant, Wittgenstein and Metaphysical Subject

Having criticized the realstic account of subject, Kant introduced the notion of metaphysical subject in his philosophical framework. In Kant’s view, metaphysical subject could make a room for both knowledge and moral law, generally speaking. Wittgenstein utilized metaphysical subject in his semantic theory in Tractatus which sounds Kantian. However, the difference between Kantian idealistic account and Wittgensteinian non-idealistic account towards metaphysical subject leads to the point that it is used in the Tractatus in the minimal sense. However, even this minimal usage of metaphysical subject produces a paradox in Tractatus. The paradox which could show the implausibility of the Tratctatus’ philosophical project. This paper tries to elaborate the paradox and show its logical implications.