Theodore Roosevelt,
A Compilation of the Messages and Papers of the Presidents…
“ Moreover, they not only left us a united Nation, but they left us also as a heritage the memory of the mighty deeds by which the Nation was kept united. We are now indeed one Nation, one in fact as well as in name; we are united in our devotion to the flag which is the symbol of national greatness and unity; and the very completeness of our union enables us all, in every part of the country, to glory in the valor shown alike by the sons of the North and the sons of the South in the times that tried men's souls. ”
