For that this should be possible, indeed that such a system should not be too great in scope for us to hope to be able entirely to complete it, can be assessed in advance from the fact that our object is not the nature of things, which is inexhaustible, but the understanding, which judges about the nature of things, and this in turn only in regard to its a priori cognition, the supply of which, since we do not need to search for it externally, cannot remain hidden from us, and in all likelihood is small enough to be completely recorded, its worth or worthlessness assessed, and subjected to a correct appraisal.c a