Pure mathematics and pure science of nature had no occasion for such a deduction, as we have made of both, for their own safety and certainty. For the former rests upon its own evidence;
Matematika hutsak eta Natur Zientzia hutsak, beren segurtasuna eta ziurtasuna babesteko, ez zeukaten, guk orain arte hemen bientzat egin dugun bezalako dedukzioaren beharrik, zeren aurrenekoa bere ebidentzia propioan oinarritzen da;