The idea that the ends of government justify the means employed, was worked into system by Machiavelli. He was an acute politician, sincerely anxious that the obstacles to the intelligent government of Italy should be swept away. It appeared to him that the most vexatious obstacle to intellect is conscience, and that the vigorous use of statecraft necessary for the success of difficult schemes would never be made if governments allowed themselves to be hampered by the precepts of the copy-book. His audacious doctrine was avowed in the succeeding age, by men whose personal character otherwise stood high. They saw that in critical times good men have seldom strength for their goodness, and yield to those who have grasped the meaning of the maxim that you cannot make an omelette if you are afraid to break the eggs. They saw that public morality differs from private, because no government can turn the other cheek, or can admit that mercy is better than justice. And they could not define the difference, or draw the limits of exception; or tell what other standard for a nation’s acts there is than the judgment which heaven pronounces in this world by success.

For a philosophy based on faith is no longer philosophy. Perhaps it was this unresolved conflict which has prevented Western thought from ever coming to rest. Perhaps it is this conflict which is at the bottom of a kind of thought which is philosophic indeed but no longer Greek: modern philosophy. It is in trying to understand modern philosophy that we come across Machiavelli. Machiavelli is the only political thinker whose name has come into common use for designating a kind of politics, which exists and will continue to exist independently of his influence, a politics guided exclusively by considerations of 'expediency, which uses all means, fair or foul, iron or poison, for achieving its ends-its end being the ag­grandizement of one's country or fatherland-but also using the father­ land in the service of the self-aggrandizement of the politician or statesman or one's party.

Machiavelli says that if as a ruler you accept that your every action must pass moral scrutiny, you will without fail be defeated by an opponent who submits to no such moral test. To hold on to power, you have not only to master the crafts of deception and treachery but to be prepared to use them where necessary.

Religion is for Machiavelli utterly necessary to found, preserve, and reform good political orders. He stated this view in the most unequivocal manner. At the same time he knew very well that the only available religion was the Christian. Had he believed and argued that Christian religion was in its essence and hopelessly inimical to good political orders and above all to republican liberty he would have been compelled to also believe and argue that good political orders and republican liberty were impossible for the moderns in general and for the Italians in particular, a conclusion that he never entertained. Instead, he believed in, and suggested, the possibility of a civic interpretation of Christianity similar to the one that he knew existed in his Florence.

Machiavelli is not concerned with how men do live merely in order to describe it; his intention is rather, on the basis of knowledge of how men do live, to teach princes how they ought to rule and even how they ought to live.

While there may exist no more than the normal extent of disagreement about the meaning of particular terms or theses contained in these works, there is a startling degree of divergence about the central view, the basic political attitude of Machiavelli.

When Machiavelli advises the Prince to carry out the Machiavellian scheme of action, he invests those actions with no sort of morality or beauty. For him morality remains what it is for everyone else, and does not cease to remain so because he observes (not without melancholy) that it is incompatible with politics. … For him evil, even if it aids politics, still remains evil. The modern realists are the moralists of realism. For them, the act which makes the State strong is invested with a moral character by the fact that it does so, and this whatever the act may be. The evil which serves politics ceases to be evil and becomes good.

The academic politician is interested in victory. He has the moral code of Machiavelli, but, because he is too impatient to submit to the instruction of history, he has not the old master’s shrewd sense of human limitations and contradictions. He makes the worst of rulers: he is neither a lover of truth, nor a practical man of the world, nor an habitual examiner of his all-too-human and persistent failings.

Four centuries ago, Machiavelli was thinking of certain great problems of human society and writing two famous books. In so doing he reached scientific generalizations about the influence of the sentiments upon the actions of men and, through these actions, upon the fate of human societies. As a whole, these conclusions stand; but from this great and ingenious work of Machiavelli's almost no developments have followed. The science of statecraft and of the influence of the sentiments upon human behavior is little different to-day from what it was in in the 16th century.

We cannot overestimate the change in men's minds required to produce the ideal of heterogeneity in religion within one State.
... In the Middle Ages politics was a branch of Theology, with whatever admixture derived from Aristotle and the Civil Law. Its basis was theocratic. Machiavelli represents the antithesis of this view, discarding ethical and rural as well as theological Criteria of State action.

Machiavelli was always considering the practical problem, how is Italy to be saved?

The jury is still out, but what Machiavelli described—either to recommend or subtly denounce it—was a diplomacy without conscience. It may look brilliant, but many who commented on Machiavelli noted that hidden in his works is the idea that a diplomacy totally separated from morality and conscience may achieve results occasionally but in most cases, and in the long run, would not work.
…However we decide to read him, Machiavelli listed as the three features of effective diplomacy caution, art (meaning the mastery of a number of technical tools), and above all patience.

We thought that it was necessary to have a way of doing politics that looked at the objective that is the reconstruction of the dignity of the human being.

Rousseau’s ideas brought about-he moved the political process to the very centre of human existence by making the legislator, who is also a pedagogue, into the new Messiah, capable of solving all human problems by creating New Men. ‘Everything,’ he wrote, ‘is at root dependent on politics.’ Virtue is the product of good government. ‘Vices belong less to man, than to man badly governed.’ The political process, and the new kind of state it brings into being, are the universal remedies for the ills of mankind.49 Politics will do all. Rousseau thus prepared the blueprint for the principal delusions and follies of the twentieth century.