  Giacomo (Jacopo) Zabarella (b. 1533 in Padua, d. 1589 in Padua) is considered the prime representative of Renaissance Italian Aristotelianism. Known most of all for his writings on logic and methodology, Zabarella was an alumnus of the University of Padua, where he received his Ph.D. in philosophy. Throughout his teaching career at his native university, he also taught philosophy of nature and science of the soul (De anima). Among his main works are the collected logical works Opera logica (1578) and writings on natural philosophy, De rebus naturalibus (1590). Zabarella was an orthodox Aristotelian seeking to defend the scientific status of theoretical natural philosophy against the pressures emanating from the practical disciplines, i.e., the art of medicine and anatomy. He developed the regressus method, which the Renaissance Aristotelians regarded as the proper method for obtaining knowledge in the theoretical sciences. At the turn of the seventeenth century Zabarella’s writings were reprinted in Germany, where his philosophy had a notable following, especially among Protestant Aristotelian authors.