Having withdrawn from the world of pornography out of disappointment with the purely commercial approach of American distributors and the resulting inferiority of video productions, Braun dedicated himself to writing scientific works on sexology ("L'impeto di Venere", dealing with the G-spot) and on anthropology, erotic historical novels, erotic thrillers, a study of prostitution, and his autobiography. In his 740-page novel "Lady Caligula", Braun goes against the grain by portraying Caligula as a brilliant character, instead of the deranged emperor described in Edward Gibbon's "Decline and Fall of the Roman Empire" and in I, Claudius.