Nicolaus Copernicus educated at University of Ferrara
Greek studies
As at Bologna, Copernicus did not limit himself to his official studies. It was probably the Padua years that saw the beginning of his Hellenistic interests. He familiarized himself with Greek language and culture with the aid of Theodorus Gaza's grammar (1495) and Johannes Baptista Chrestonius's dictionary (1499), expanding his studies of antiquity, begun at Bologna, to the writings of Bessarion, Lorenzo Valla, and others. There also seems to be evidence that it was during his Padua stay that the idea finally crystallized, of basing a new system of the world on the movement of the Earth.
As the time approached for Copernicus to return home, in spring 1503 he journeyed to Ferrara where, on 31 May 1503, having passed the obligatory examinations, he was granted the degree of Doctor of Canon Law (Nicolaus Copernich de Prusia, Jure Canonico ... et doctoratus). No doubt it was soon after (at latest, in fall 1503) that he left Italy for good to return to Warmia.
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