Perhaps taking a page from George Bernard Shaw and his Don Juan in Hell, Fellini has set Casanova not in the Europe of the 1700s but in the fiery furnaces of his antihero???s vapidity; thus one of the culminating shots is an extreme close-up of the older, still-fantasizing Casanova???s eyes, nearly satanic in their emptiness???Fellini once said he cast Donald Sutherland in the lead role because he