because sensibility by means of its form of external intuition, viz., by space, the same with which the geometer is occupied, makes those objects at all possible as mere appearances. It will always remain a remarkable phenomenon in the history of philosophy, that there was a time, when even mathematicians, who at the same time were philosophers, began to doubt, not of the accuracy of their geometrical propositions so far as they concerned space, but of their objective validity and the applicability of this concept itself, and of all its corollaries, to nature.
beldur baitziren, ezen lerro bat puntu fisikoz osaturik egongo zela naturan eta, beraz, objektuetan benetako espazioa zati bakunez egongo zela osatua, nahiz eta geometrilariak pentsamenduan duen espazioa inola ere ezin daitekeen horrela osaturik egon. Ez zekiten haiek, jakin, ezen pentsamenduko espazio horrek berak egiten zuela ahalgarri espazio fisikoa, h. d.