Giacomo Casanova 17, in 1742, with a degree in law ("for which I felt an unconquerable aversion"). His guardian's hope was that he would become an ecclesiastical lawyer. Casanova had also studied moral philosophy, chemistry, and mathematics, and was keenly interested in medicine. ("I should have been allowed to do as I wished and become a physician, in which profession quackery is even more effective than it is in legal practice.") He frequently prescribed his own treatments for himself and friends. While attending the university, Casanova began to gamble and quickly got into debt, causing his recall to Venice by his grandmother,
Giacomo Casanova the same result. Not lacking either connections or confidence, Casanova went to Russia and met with Catherine the Great, but she flatly turned down the lottery idea. In 1766, he was expelled from Warsaw following a pistol duel with Colonel Franciszek Ksawery Branicki over an Italian actress, a lady friend of theirs. Both duelists were wounded, Casanova on the left hand. The hand recovered on its own, after Casanova refused the recommendation of doctors that it be amputated. From Warsaw, he traveled to Breslau in the Kingdom of Prussia, then to Dresden, where he contracted yet another venereal infection. He