We must hit on them first by our own reflexion, then we find them elsewhere, where we could not possibly have found them at first, because the authors themselves did not know that such an idea lay at the basis of their observations.
hauxe da Metafisika, hemen aurkituko duzue zuek zientzia horren helbururik printzipalena, izaki goren baten eta etorkizuneko mundu baten ezagutza, eta dena arrazoi hutsaren printzipioen bidez frogaturik.