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 his superstitions and terrorized him into silence. When Balbi broke through to Casanova's cell, Casanova lifted himself through the ceiling, leaving behind a note that quoted the 117th Psalm (Vulgate): "I shall not die, but live, and declare the works of the Lord". The spy remained behind, too frightened of the consequences if he were caught escaping with the others. Casanova and Balbi pried their way through the lead plates and onto the sloping roof of the Doge's Palace, with a heavy fog swirling. The drop to the nearby canal being too great, Casanova prised open the grate over a