 Finally, the objective unity of any judgment whatsoever is guaranteed by the faculty of apperception or rational self-consciousness, which plays the “executive” role in the corporate organization of the mind by introducing a single higher-order unity into all of its lower-order representations, via judgment, and whose characteristic output is the cogito-like self-directed judgment-forming representation “I think” (Ich denke): as in “I think about X” (where X is some concept, say the concept of being a philosopher) or “I think that P” (where that-P is some proposition, say the proposition that Kant is a philosopher) (B131–132). The I think according to Kant is “the vehicle of all concepts and judgments whatever” (A341/B399), because it is both a necessary condition of the objective unity of every judgment and also automatically implements one or another of a set of primitive pure a priori logical forms or functions of unity in judgments or thoughts—“the pure concepts of the understanding” or “categories” (A66–83/B91–116)—in the several semantic constituents of that judgment.