Primary Source
And now, friends, fellow-citizens, as we stand among these honored graves, the momentous question presents itself, which of the two parties to the war is responsible for all this suffering, for this dreadful sacrifice of life - the lawful and constitutional government of the United States, or the ambitious men who have rebelled against it?… I say "rebelled" against it, although Earl Russell, the British Secretary of State for Foreign Affairs,… seems to intimate that no prejudice ought to attach to that word, inasmuch as our English forefathers rebelled against Charles I and James II, and our American fathers rebelled against George III. These precedents do not prove that it was just and proper for the "disappointed great men" of the cotton-growing States to rebel against 'the most beneficent government of which history gives us any account'…" They do not create a presumption even in favor of the disloyal slaveholders of the South, who, living under a government of which Mr. Jefferson Davis… said that it was "the best government ever instituted by man…" rebelled against it because their aspiring politicians, himself among the rest, were in danger of losing their monopoly of its offices.
Quoted in Edward Everett: Unionist Orator Ronald F. Reid, Library of Congress, 1990, pps. 181-182.