Machiavelli (1469-1527) was born in Florence of a family which had enjoyed the first offices in the republic. At the age of thirty, he was made chancellor of the state, and from that time he was constantly employed in public affairs, and particularly in embassies. Among those to the smaller princes of Italy, the one of the longest duration was to Caesar Borgia, whom he narrowly observed at the very important period when this illustrious villain was elevating himself by his crimes, and whose diabolical policy he had thus an opportunity of studying. He had a considerable share in directing the counsels of the republic, and the influence to which he owed his elevation was that of the free party, which censured the power of the Medici, and at that time held them in exile. When the latter were recalled, Machiavelli was deprived of all his offices and banished. He then entered into a conspiracy against the usurpers, which was discovered, and he was put to the torture, but without wresting from him any confession which could impeach either himself or those who had confided in his honor. Leo X., on his elevation to the pontificate, restored him to liberty. At this time he wrote his "History of Florence," in which he united eloquence of style with depth of reflection, and although an elegant, animated, and picturesque composition, it is not the fruit of much research or criticism. Besides this history, Machiavelli wrote his discourses on the first decade of Livy, considered his best work, and "The Art of War," which is an invaluable commentary on the history of the times. These works had the desired effect of inducing the Medici family to use the political services of the author, and at the request of Leo X. he wrote his essay "On the Reform of the Florentine Government."