During this time, he published Il Trentino veduto da un Socialista ( Trentino as seen by a Socialist ) in the radical periodical La Voce .  He also wrote several essays about German literature, some stories, and one novel: L'amante del Cardinale: Claudia Particella, romanzo storico ( The Cardinal's Mistress ). This novel he co-wrote with Santi Corvaja, and was published as a serial book in the Trento newspaper Il Popolo . It was released in installments from 20 January to 11 May 1910.  The novel was bitterly anticlerical, and years later was withdrawn from circulation after Mussolini made a truce with the Vatican.