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 capital city and principal cultural center of Bohemia, on many occasions. In October 1787, he met Lorenzo da Ponte, the librettist of Wolfgang Amadeus Mozart's opera "Don Giovanni", in Prague at the time of the opera's first production and likely met the composer, as well, at the same time. There is reason to believe that he was also in Prague in 1791 for the coronation of Holy Roman Emperor Leopold II as king of Bohemia, an event that included the first production of Mozart's opera "La clemenza di Tito". Casanova is known to have drafted dialogue suitable for a Don