In this and no other way can geometry be made secure as to the undoubted objective reality of its propositions against all the intrigues of a shallow Metaphysics, which is surprised at them [the geometrical propositions], because it has not traced them to the sources of their concepts.
Beste inola ez eta honela bakarrik babes daiteke geometrilaria axaleko Metafisika baten bidegabekeria guztien kontra, bere proposizioen dudagabeko errealitate objektiboa dela bide, nahiz eta proposizio hauek guztiz arrotzak iruditu metafisikalariari, hau bere kontzeptuen iturriraino igotzen ez delako.