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 I die as a Christian". Casanova was buried at Dux (nowadays Duchcov in the Czech Republic), but the exact place of his grave was forgotten over the years, and remains unknown today. The isolation and boredom of Casanova's last years enabled him to focus without distractions on his "Histoire de ma vie", without which his fame would have been considerably diminished, if not blotted out entirely. He began to think about writing his memoirs around 1780 and began in earnest by 1789, as "the only remedy to keep from going mad or dying of grief". The first draft was completed