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 was again called to help increase the state treasury. He was entrusted with a mission of selling state bonds in Amsterdam, Holland being the financial center of Europe at the time. He succeeded in selling the bonds at only an 8% discount, and the following year was rich enough to found a silk manufactory with his earnings. The French government even offered him a title and a pension if he would become a French citizen and work on behalf of the finance ministry, but he declined, perhaps because it would frustrate his "Wanderlust". Casanova had reached his peak of fortune,