It recommends an universal doubt, not only of all our former opinions and principles, but also of our very faculties; of whose veracity, say they, we must assure ourselves, by a chain of reasoning, deduced from some original principle, which cannot possibly be fallacious or deceitful.
Zalantza unibertsal bat gomendatzen du, ez bakarrik aurretik ditugun gure iritzi eta printzipioez, baizik gure ahalmenez euretaz ere, zeintzuon egiatasunaz, diote, geure kabuz ziurtatu beharko genukeen, gezurrezko edo maulazko izan ez daitezkeen jatorrizko printzipio zenbaitetik deduzituriko arrazoiketa-kate baten bidez.