At the period which I am now considering, the public men of the North who acted an important part in national affairs, and who belonged, as Mr. Buchanan unquestionably did belong, to the higher class of statesmen, had to act with a wise circumspection on this subject of slavery. There was nothing that such a man could do, if he regarded his public duty with an American statesman’s sense of public obligation, but to stand aloof from and to discountenance what was wrong in the doings of the anti-slavery agitators. In this course of conduct he had often to discriminate between conflicting claims of constitutional rights that unquestionably belonged to every citizen of the United States, and acts which no citizen had a right to do, or which it was in the highest and plainest sense inexpedient to allow him to do. In these conflicts, right and wrong became at times so mixed and intricate, that it required a resolute and clear intellect to separate them, and a lofty courage in meeting obloquy and misrepresentation. It was an easy matter, in the exciting period of those slavery questions, to impute to a Northern man of either of the great political parties of the time, a base truckling to the South for his own ambitious purposes. After ages must disregard the ephemeral vituperation of politics, and must judge the statesmen of the past by the situation in which they stood, by the soundness of their opinions, by their fidelity to every unquestionable right, by the correctness of their policy, and by the purity of their characters and their aims. There has been a passionate disposition in our day to judge the public men of the North, who had to act in great and peculiar crises of the sectional conflict, and who did not give themselves up to a purely sectional spirit, by a standard that was inapplicable to their situation, because it was unjust, illogical and inconsistent with the highest ideas of public duty in the administration of such a Government as ours. The anti-slavery agitation, begun in the North at the time and carried on in the mode I have described, is to be deplored, because of the certainty that sudden emancipation, which was alone considered or cared for by the abolitionists, must be fraught with great evils.