ABSTRACT
At the beginning of his Opera logica, Jacopo Zabarella (1533-1589), the most outstanding of Paduan Aristotelians, draws a distinction between the eternal world of nature and the contingent human world. From this distinction he proceeds to two corresponding kinds of knowledge, and two distinct methods of defining them.t The Aristotelian distinction between arts (artes) and sciences (scientiae) serves as the starting-point for Zabarella' s philosophical system.
