"How then is it possible for human reason to produce a cognition of this nature entirely a priori?" Does not this faculty [which produces mathematics], as it neither is nor can be based upon experience, presuppose some ground of cognition a priori, which lies deeply hidden, but which might reveal itself by these its effects, if their first beginnings were but diligently ferreted out?
"Nola lor dezake giza arrazoiak osoro a priori horrelako ezagutza-modurik?" Ahalmen horrek, ez baita esperientziatan oinarritzen eta oinarritzerik ere ez baitauka, ez ote du aurretiaz suposatzen nolabaiteko ezagutza-oinarri apriorizkoren bat, sakonki ezkutaturik dagoena, baina bere burua bere eragin horien bidez erakutsiko lukeena, horren hasierako hastapenei arrastoa arretaz segituko balitzaie?