a priori is also valid, albeit only indirectly, for the object of experience, the prin ciples of pure reason will also have objective reality in regard to this object, yet not so as to detennine something in it, but only to indicate the procedure in accordance with which the empirical and determinate use of the understanding in experience can be brought into thoroughgoing agreement with itself, by bringing it as far as possible into connection with the principle of thoroughJoing unity; and from that it is derived.