The most distinguished of the Visconti despots was Gian Galeazzo. He began his reign by capturing and poisoning his uncle, who was ruling over a portion of the already extensive territory of the Visconti.[217] It seemed for a time that he might conquer all of northern Italy; but his progress was checked by the republic of Florence and then cut short by premature death. Gian Galeazzo exhibited all the characteristic traits of the Italian despots. He showed himself a skillful and successful ruler, able to organize his government admirably. He gathered literary men about him; and the beautiful buildings which were begun by him indicate his enthusiasm for art. Yet he was utterly unprincipled, and resorted to the most hideous methods in order to gain possession of coveted towns which he could not conquer or buy outright. [Sidenote: Position and character of the Italian despots.] There are many stories of the incredible ferocity exhibited by the Italian despots.[218] It must be remembered that they were very rarely legitimate rulers, but usurpers, who could only hope to retain their power so long as they could keep their subjects in check and defend themselves against equally illegitimate usurpers in the neighboring cities. This situation developed a high degree of sagacity, and many of the despots found it to their interest to govern well and even to give dignity to their rule by patronizing artists and men of letters. But the despot usually made many bitter enemies and was almost necessarily suspicious of treason on the part of those about him. He was ever conscious that at any moment he might fall a victim to the dagger or the poison cup. [Sidenote: The _condottieri_.] The Italian towns carried on their wars among themselves largely by means of hired troops. When a military expedition was proposed, a bargain was made with one of the leaders (_condottieri_), who provided the necessary force. As the soldiers had no more interest in the conflict than did those whom they opposed, who were likewise hired for the occasion, the fight was not usually very bloody; for the object of each side was to capture the other without unnecessarily rough treatment. It sometimes happened that the leader who had conquered a town for his employer appropriated the fruits of the victory for himself. This occurred in the case of Milan in 1450. The Visconti family having died out, the citizens hired a certain captain, named Francesco Sforza, to assist them in a war against Venice, whose possessions now extended almost to those of Milan. When Sforza had repelled the Venetians, the Milanese found it impossible to get rid of him, and he and his successors became rulers over the town. [Sidenote: Machiavelli's _Prince_.]