And this change, whatever the outward shape in which it may incarnate itself, in the fulness of time, will come of changed ideas, opinions, and feelings in the general mind and heart. All institutions, even those of the oldest of despotisms, exist by the permission and consent of those who live under them. Change the ideas of the thronging multitudes by the banks of the Neva, or on the shores of the Bosphorus, and they will be changed into Republicans and Christians in the twinkling of an eye. Not merely the Kingdom of Heaven, but the kingdoms of this world, are within us. Ideas are their substance; institutions and customs but the shadows they cast into the visible sphere. Mould the substance anew, and the projected shadow must represent the altered shape within. Hence the dread despots feel, and none more than the petty despots of the plantation, of whatever may throw the light of intelligence across the mental sight of their slaves. Men endure the ills they have, either because they think them blessings, or because they fear lest, should they seek to fly them, it might be to others that they know not of. The present Bonaparte holds France in a chain because she is willing that he should. Let her but breathe upon the padlock, and, like that in the fable, it will fade into air, and he and his dynasty will vanish with it. So the people of the North submit to the domination of the South because they are used to it, and are doubtful as to what may replace it. Whenever the millions, North and South, whom Slavery grinds under her heel, shall be resolutely minded that her usurpation shall cease, it will disappear, and forever. As soon as the stone is thrown the giant will die, and men will marvel that they endured him so long. But this can only come to pass by virtue of a change yet to be wrought in the hearts and minds of men. Ideas everywhere are royal;--here they are imperial. It is the great office of genius, and eloquence, and sacred function, and conspicuous station, and personal influence to herald their approach and to prepare the way before them, that they may assert their state and give holy laws to the listening nation. Thus a glorious form and pressure may be given to the coming age. Thus the ideal of a true republic, of a government of laws made and executed by the people, of which bards have sung and prophets dreamed, and for which martyrs have suffered and heroes died, may yet be possible to us, and the great experiment of this Western World be indeed a Model, instead of a Warning to the nations. MY PORTRAIT GALLERY.