Kant's Noumenon

"Kant completes his explanation of the unity of reason in the Critique of Judgment. He there plays with the fire of the noumenon, draws back protesting his ontological innocence, and, though innocent, is drawn to the fire again. While trying to solve 'the antinomy of taste,' he suggests that the two apparently conflicting propositions may both be true because the judgment rests not on a determinate but on an indeterminate concept, that of the 'supersensible substrate of the phenomenal." --Scharfstein

"The subjective principle--that is to say, the indeterminate idea of the supersensible within us--can only be indicated as the unique key to the riddle of this faculty, itself concealed from us in its sources; and there is no means of making it any more intelligible." --Kant, Critique of Judment, para. 57.