The three stages of national growth which preceded the war between the States were each of them creative of a distinct class of political leaders. In the period of erection there were great architects and master-builders; in the period of constitutional interpretation there were, at a distance from the people, great political schoolmen who pondered and expounded the letter of the law, and, nearer the people, great constitutional advocates who cast the doctrines of the schoolmen into policy; and in the period of abolitionist agitation there were great masters of feeling and leaders of public purpose. The publicists of the second period kept charge of the slavery question, as I have said, as long as they could, and gave place with bitter reluctance to the anti-slavery orators and pro-slavery champions who were to talk the war-feeling into a flame. But it was of course inevitable that the new movement should have new leaders. It was essentially revolutionary in its tone and in its designs, and so quite out of the reach of those principles of action which had governed the policy of the older school of politicians. Its aim was to change, not to vindicate, the Constitution. Its leaders spoke, not words of counsel, but words of passion and of command. It was a crusade, not a campaign; the impetuous movement of a cause, not the canvass of a mooted measure. And, like every big, stirring cause, it had its leaders--leaders whose authority rested upon the affections and sympathies of the people rather than upon any attested wisdom or success of statesmanship. The war was the work, mediately, of philanthropists; and the reconstructions which followed the war were the hasty strokes of these same unbalanced knights of the crusade, full of bold feeling, but not of steady or far-sighted judgment. The anti-slavery movement called forth leaders who, from the very nature of their calling, were more picturesque than any who had figured on the national stage since the notable play of the Revolution had gone off the boards; but it was no better cast in leading parts than had been the drama which immediately preceded it. When the constitution of a self-governing people is being consciously moulded by the rapid formation of precedent during the earliest periods of its existence, there are sure to be antagonistic beliefs, distinct and strong and active enough to take shape in the creeds of energetic parties, each led by the greatest advocates of its cherished principles. The season of our constitutional development, consequently, saw as fine a race of statesmen at the front of national affairs as have ever directed the civil policy of the country; and they, in turn, gave place to men brave to encounter the struggles of changed times, and fit to solve the doubts of a new set of events.