Francesco, by appropriate means and through great abilities, from citizen became Duke of Milan, and what he had attained after a thousand difficulties he maintained with little trouble. On the other hand, Cesare Borgia, commonly called Duke Valentine, acquired the state through the fortune of his father and by the same means lost it, and that although every measure was adopted by him and everything done that a prudent and capable man could do to establish himself firmly in that state that the arms and the favours of others had given him. For, as we have said, he who does not lay his foundations beforehand may by great abilities do so afterwards, although with great trouble to the architect and danger to the building. If, then, one considers the progress made by the duke, it will be seen how firm were the foundations he had laid to his future power, which I do not think it superfluous to examine, as I know of no better precepts for a new prince to follow than the example of his actions; and if his measures were not successful, it was through no fault of his own but only by the most extraordinary malignity of fortune. In wishing to aggrandise the duke his son, Alexander VI. had to meet very great difficulties both present and future. In the first place, he saw no way of making him ruler of any state that was not a possession of the Church. And in attempting to take that of the Church, he knew that the Duke of Milan and the Venetians would not consent, because Faenza and Rimini were already under the protection of the Venetians. He saw, moreover, that the arms of Italy, especially of those who might have served him, were in the hands of those who would fear the greatness of the pope, and therefore he could not depend upon them, being all under the Orsinis and Colonnas and their adherents. It was, therefore, necessary to disturb the existing condition and bring about disorders in the states of Italy in order to obtain secure mastery over a part of them; this was easy, for he found the Venetians, who, actuated by other motives, had invited the French into Italy, which he not only did not oppose, but facilitated by dissolving the marriage of King Louis. The king came thus into Italy with the aid of the Venetians and the consent of Alexander, and had hardly arrived at Milan before the pope obtained troops from him for his enterprise in the Romagna, which he carried out by means of the reputation of the king. The duke having thus obtained the Romagna and defeated the Colonnas, was hindered in maintaining it and proceeding further by two things: the one, his forces, of which he doubted the fidelity; the other the will of France, that is to say, he feared lest the arms of the Orsini of which he had availed himself should fail him, and not only hinder him in obtaining more but take from him what he had already conquered, and he also feared that the king might do the same. He had evidence of this as regards the Orsini