Giacomo Casanova Juan drama at the time of his visit to Prague in 1787, but none of his verses were ever incorporated into Mozart's opera. His reaction to seeing licentious behavior similar to his own held up to moral scrutiny as it is in Mozart's opera is not recorded. In 1797, word arrived that the Republic of Venice had ceased to exist and that Napoleon Bonaparte had seized Casanova's home city. It was too late to return home. Casanova died on June 4, 1798, at age 73. His last words are said to have been "I have lived as a philosopher and
Giacomo Casanova them Madame de Pompadour, Count de Saint-Germain, d'Alembert, and Jean-Jacques Rousseau. So popular was alchemy among the nobles, particularly the search for the "philosopher's stone", that Casanova was highly sought after for his supposed knowledge, and he profited handsomely. He met his match, however, in the Count de Saint-Germain: "This very singular man, born to be the most barefaced of all imposters, declared with impunity, with a casual air, that he was three hundred years old, that he possessed the universal medicine, that he made anything he liked from nature, that he created diamonds." De Bernis decided to send Casanova