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“Here is another way of putting an aspect of that same parallel: just as The Critique of Pure Reason seeks to show us that the formal conditions of sensory consciousness of an object presuppose a form of synthesis that belongs to the understanding, so, too, the Tractatus seeks to show us that the formal conditions of sensory consciousness of the identity of a sign presupposes linguistic self-consciousness of the logical nexus of the symbol. Just as Kant seeks to show how, on the one hand, the understanding must bear on sensibility in order to have content (for it to represent anything), and how, on the other, the sensible manifold requires conferral of unity through the activity of the understanding to be more than merely blind (for it to amount to more than mere sensory noise); so, too, later Wittgenstein aims to show how, on the one hand, the symbol must find expression in the sign to be more than nothing (for it to say anything), and how, on the other, the form of the sign (in spoken language—its phonological form) presupposes the apprehension of its real possibilities for symbolizing (its logico-grammatical uses in acts of speech) in order for it to come into view as having the form that it does.”