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 trustees of the first state lottery, and one of its best ticket salesmen. The enterprise earned him a large fortune quickly. With money in hand, he traveled in high circles and undertook new seductions. He duped many socialites with his occultism, particularly the Marquise Jeanne d'Urfé, using his excellent memory which made him appear to have a sorcerer's power of numerology. In Casanova's view, "deceiving a fool is an exploit worthy of an intelligent man". Casanova claimed to be a Rosicrucian and an alchemist, aptitudes which made him popular with some of the most prominent figures of the era, among