 Kant’s arguments for his transcendental idealism are distributed across all parts of his Critique of Pure Reason. He gives a direct argument for it in the Transcendental Aesthetic, supplemented by the Transcendental Analytic, and he gives an indirect argument for it in the Transcendental Dialectic by arguing that only his transcendental idealism can allow us to avoid the paradoxes or confusions of traditional metaphysics. We will comment first on Kant’s direct argument for transcendental idealism and then on his indirect argument for it through the critique of traditional metaphysics.