-No doubt it will be difficult for those who think about things loosely, and have not been accustomed to know them by their primary causes, to comprehend the demonstration of Prop. vii.:
Badakit gauza guziak nahas-mahas ikusten dituztenentzat eta kausa lehenen arabera gauzen ezagutzen ohituak ez direnentzat 7. Proposizioaren demonstrazioa ulertzea ez dela erraza.