If when this war is concluded, our Government is to have a policy or a principle, it should manifestly be that of reinstating itself in power, in consolidating that power, and in acting as a powerful unity, according to the letter and the spirit of the Constitution. The CONSTITUTION--bear that word well in mind--the Constitution which suffers no State to usurp a single power belonging to the General Government, and which was expressly framed for the purpose of making all its freemen the citizens of one great nation. Let the reader consult the Constitution, study its unmistakable plan of national integrity and of state subordination, and then reflect whether, according to its spirit, any and every mere state privilege which may be claimed should not yield to the paramount claim of _the Union_? If this war has demonstrated any thing, it has been, firstly, the fact that the South SHALL stay in the Union, and secondly, the folly of permitting the old Southern system to control us in politics, in social life, and in every thing. We have had enough of it. Manufactures, free labor, science, schools, the press, learning, new ideas, social reforms, the whole _progress_ of the age, inspiring twenty millions, can no longer be cuffed and scouted in the Senate and snubbed in the _salon_ or public meeting by the private interests of half a million of the most illiberal and ignorant conservatives in existence. Henceforth the North must _rule_. 'Must' is a hard nut, but Southern teeth must crack it, whether they will or no. We may shuffle and quibble, but to this it must come. Every day of the war renders it more certain. The farm must encroach on the plantation, the rural nobility give place to the higher nobility of intelligence; social culture based on mudsills must make way for the mudsills themselves--for lo! the sills which they buried are not dead timber, neither do they sleep or rot--they were fresh saplings, and with the reviving breath of spring and at the gleam of the sun of freedom, they will shoot up into brave, strong life. Let them talk, dispute, hem and haw, that will--we can not set aside the great fact that in future our Government will be united in its policy, great in its strength, and no longer impeded by the selfish arrogance of a petty planterdom. Labor and capital are bursting their bonds--the Middle Class of North-America which Southerners and Englishmen equally revile, is becoming all-powerful and seeks to substitute business common-sense for the aristocratic policy which has hitherto guided us. It is no longer a question of radicalism, of poor against rich, of lazzaroni and royalists, but of a new element--that of labor and of intellect combined--the guiding-spirit of the North. And the question is, how to best aid this element in its progress?