But as soon as I had succeeded in solving Hume's problem not merely in a particular case, but with respect to the whole faculty of pure reason, I could proceed safely, though slowly, to determine the whole sphere of pure reason completely and from general principles, in its circumference as well as in its contents. This was required for metaphysics in order to construct its system according to a reliable method.
eta, kontu honetan okerrena dena, Metafisikak, inon existitzen dela ere, ezin zidan puntu honetan inolako laguntzarik eman, ba dedukzio horrek Metafisikaren posibilitatea bera frogatu behar du lehendabizi.