The thinking world has not yet settled into the conviction that a great continental policy, preserving internal peace, and enduring for an indefinite period into the far-off future, is a possible thing. The fate of nations and empires, as revealed in history, is apparently against such an idea. Many empires have already appeared, risen to power, fallen into decay, and become dismembered, having run their course and disappeared. May it not be so with our own great confederacy of States? The authority against a great, practical, enduring political unity is respectable. May we not be fighting for an illusion? What guarantee have we in history, science, and common sense, that our Federal Union will not crumble as the empires of the past have done, and as the political prophets of Europe, casting the horoscope of nations in the shadows of their own political fragmentarism, have predicted for us? Even should the rebels South be chastised, and the Union restored for the present, have we solid reasons for believing in the permanency of our institutions? What is the warrant for our faith that American destiny comprehends the principle of American unity? People contract habits of thought in a great measure from the nature of the institutions which surround them. Europe could think nothing but feudalism at one time; she had no conception of religion outside the Church of Rome. The Turk thinks by the standard of political absolutism and the Moslem faith. The reflections of every people are cast in the national mould; it is so the world over, and has been so in all times. Europe, or at least a very influential portion thereof, thinks that the 'balance of power' system will yet be inaugurated among the family of nations yet to spring up on this continent. Her people think balance of power, and the London _Times_ and like organs of the existing polity write balance of power for our edification, and for the future of America. They cannot conceive that there is any other way to get along for any considerable length of time. In like manner is it concluded--keeping up the old trains of thought--that if nations once fell into fragments when shaken, they will do just so again. Now, perhaps we have contracted habits of thought from the character of our country and her institutions, and are deceiving ourselves with hopes which have no real foundation. These, we believe, are considerations which have engaged the attention of every reflecting man; and it behooves us, as intelligent Americans and members of a young nation of hitherto unexampled prosperity and promise, to be able to give a reason for the faith that is in us.