From the era which dates the national existence of the American people, dates also a mighty step in the march of human knowledge. And it is consistent with that principle in our conformation which leads us to rejoice in the good which befalls our species, and to sorrow for the evil, that our hearts should expand on this day; - on this day, which calls to memory the conquest achieved by knowledge over ignorance, willing co-operation over blind obedience, opinion over prejudice, new ways over old ways, when, fifty-two years ago, America declared her national independence, and associated it with her republican federation.