A certain Filippo Nardoni, upon completing his review of the libretto of Giuseppe Verdi's Don Alvaro (the Roman version of La forza del destino), wrote to the director of the police: ‘I have marked in pencil the proposed corrections, which I have thought advisable for the wretched subject of the opera. If you don't like them, they can be easily erased with sandarac’. It seems strange that an ostensible censor would correct a libretto and then not mind seeing his corrections erased; censors were, after all, gatekeepers of morality and political propriety, and no libretto was supposed to be permitted without their approval. As it turns out, Nardoni was not an official Roman censor, and yet, he and other prominent personalities were more important in censoring Verdi's operas than their official colleagues. They were not only more rigorous when it came to identifying potentially dangerous passages but also worked as a team, passing the libretto around among themselves until an acceptable alternative was found.