The advantage which mathematics, pure natural science, and logic have over them, as a priori knowledge, rests merely upon this, that the formal element in knowledge upon which all that is a priori is based, is given as a whole and at once, and therefore in it we can always proceed from the cause to the effect, while in the former kind of knowledge we are generally obliged to proceed from the effect to the cause.
Matematikak, natur zientzia hutsak eta logikak haien aurrean duten abantaila a priori ezagutza gisa, ezagutzen formalkia, zeinen gainean aprioritate oro oinarritzen baita, erabat emana egotean soilik datza eta horregatik hemen arrazoitik ondoriora iragan ahal izatean, han ordea gehienetan ondoriotik arrazoira.