He hoped to do so in France, at Paris. He was there in 1534, and was, at the same time, a student and a professor. He both gave and received lessons in medicine, mathematics, and astronomy, and was soon noted for his rapid insight, brilliant imagination, marvellous powers of acquisition, and wealth of novel theories, often rash, but sometimes ingenious and happy. He conjectured, and almost described, the circulation of the blood, took part with the Greek against the Arabian physicians, speaking of all those who did not agree with him as 'fools and public pests.' {297} He gave courses of lectures on mathematics and astronomy which were a mixture of science and chimerical conjecture, and he translated Ptolemy's Geography. The extent and versatility of his intellectual powers attracted large audiences; but at the same time his exacting and arrogant character, his overbearing and pretentious manners, his restless and quarrelsome temper soon embroiled him not only with the physicians who were his rivals, but with the whole University of Paris, which distrusted his views and detested his person. He lacked both personal influence and modesty; he was not only violent and abusive to his adversaries, like the majority of even the most eminent learned men in his time, but in every dispute he showed that presumptuous and arrogant self-complacence which inflicts far deeper wounds than open and even brutal anger. His theological heresies and astrological dreams furnished numerous pretexts against him. He was denounced to the 'Parlement' of Paris, and they condemned him to suppress an abusive treatise which he had published, and forbade him to teach astrology, or to prophesy and predict from the stars. Annoyed at this, and lacking stability of purpose, he left Paris and went to Lyons, where he obtained employment as corrector of the press to the celebrated printers Melchior and Caspar Trechsel; he returned to Paris, and left again; went first to Avignon, then to Charlieu, a small town near Lyons, changing his name and residence incessantly; sometimes eager for retirement and sometimes for display; desiring fame, and yet often in great need of concealment. {298} At length, in 1540, he settled at Vienne, in Dauphiné, where the archbishop, Mgr. Palmier, who had attended some of his lectures in Paris took him under his protection.