Finally, if the question is third whether we may not at least think this being different from the world in accordance with an analogy with objects of experience, then the answer is by all means, but only as object in the idea and not in reality, namely, only insofar as is a substratum, unknown to us, of the systematic unity, order, and purposiveness of the world's arrangement, which reason has to make into a regulative principle of its investigation of nature.