If in a new science, which is wholly isolated and unique in its kind, we started with the prejudice that we can judge of things by means of our previously acquired knowledge, which is precisely what has first to be called in question, we should only fancy we saw everywhere what we had already known, the expressions, having a similar sound, only that all would appear utterly metamorphosed, senseless and unintelligible, because we should have as a foundation our own notions, made by long habit a second nature, instead of the author's.
baizik ere bati hori dena erabat deformatua, burugabea eta nahaste-borraste bat iruditu behar zaiola, ba azpi-azpian oinarritzat jartzen dena ez baitira autorearen pentsamenduak, eta bai norberaren pentsamolde propioa, ohitura luze baten ondorioz norberaren natura eginik dagoena.