Since through the cosmological principle of totality no maximum in the series of conditions in a world of sense, as a thing in itself, is given, but rather this maximum can merely be given as a problemb in the regress of this series, the principle of pure reason we are thinking of retains its genuine validity only in a corrected significance not indeed as an axiom for thinking the totality in the objectd as real, but as a probleme for the understanding, thus for the subject in initiating and continuing, in accordance with the completeness of the idea, the regress in the series of conditions for a given conditioned.