not to be able without grief to part from those hopes, and disengage itself from its old attachment.

That there are three kinds of antinomies has its ground in this, that there are three cognitive faculties, — Understanding, Judgement, and Reason; of which each (as a superior cognitive faculty) must have its a priori principles. For Reason, in so far as it judges of these principles and their use, inexorably requires, in respect of them all, the unconditioned for the given conditioned; and this can never be found if we consider the sensible as belonging to things in themselves, and do not rather supply to it, as mere phenomenon, something supersensible (the intelligible substrate of nature both external and internal) as the reality in itself [Sache an sich selbst]. There are then: (1)