Andreoni went on to explain that the publication of her father's book was the immediate cause of Fulvia's persecution. The Origin of Civilisation, which had been printed some months previously in Amsterdam, had stirred Italy more profoundly than any book since Beccaria's great work on Crime and Punishment. The author's historical investigations were but a pretext for the development of his political theories, which were set forth with singular daring and audacity, and supported by all the arguments that his long study of the past commanded. The temperate and judicial tone which he had succeeded in preserving enhanced the effect of his arraignment of Church and state, and while his immense erudition commended his work to the learned, its directness of style gave it an immediate popularity with the general reader. It was an age when every book or pamphlet bearing on the great question of personal liberty was eagerly devoured by an insatiable public; and a few weeks after Vivaldi's volume had been smuggled into Italy it was the talk of every club and coffee-house from Calabria to Piedmont. The inevitable result soon followed. The Holy Office got wind of the business, and the book was at once put on the Index. In Naples and Bologna it was publicly burned, and in Modena a professor of the University who was found to have a copy in his possession was fined and removed from his chair. In Milan, where the strong liberal faction among the nobility, and the comparative leniency of the Austrian rule, permitted a more unrestrained discussion of political questions, the Origin of Civilisation was received with open enthusiasm, and the story of the difficulties that Fulvia had encountered in its publication made her the heroine of the moment. She had never concealed her devotion to her father's doctrines, and in the first glow of filial pride she may have yielded too openly to the desire to propagate them. Certain it is that she began to be looked on as having shared in the writing of the book, or as being at least an active exponent of its principles. Even in Lombardy it was not well to be too openly associated with the authorship of a condemned book; and Fulvia was suddenly advised by the police that her presence in Milan was no longer acceptable to the government. The news excited great indignation among her friends, and Count Castiglione and several other gentlemen of rank hastened to intervene in her behalf; but the governor declared himself unwilling to take issue with the Holy Office on a doctrinal point, and privately added that it would be well for the Signorina Vivaldi to withdraw from Lombardy before the clergy brought any direct charge against her. To ignore this hint would have been to risk not only her own safety but that of the gentlemen who had befriended her; and Fulvia at once set out for Pianura, the only place in Italy where she could count on friendship and protection.