"That which we have discovered in the way of inexactness and imperfection in the optical machine and in the image on the retina, is as nothing in comparison with the incongruities which we have just come across in the domain of the sensations.
"Makina optikoan eta erretinako irudian aurkitu ditugun zehazgabetasun eta ezosotasuna ez dira ezer zentzazioen eremuan topaberri dugun inkongruentziarekin konparaturik.