I told General Thomas L. Kane, that friend to humanity, when he visited us in 1857, that the coming of that army was the entering wedge to split the Government of the United States in pieces, and that soon. He, of course, could not see how this could ever be. They then were in great prosperity, and were going to annex the whole continent and neighboring islands, and so continue to annex until the whole world should take shelter under our national banner. He only saw this from a political stand point, basing his expectations of such grand results upon the goodness of the Constitution and laws. I acknowledged to him that we have the best system of government in existence, but queried if the people of this nation were righteous enough to sustain its institutions. I say they are not, but will trample them under their feet. I told General Kane that the Government of the United States would be shivered to pieces. Will this Government ever be restored to its former peace and tranquility, and the institutions thereof ever be maintained and honored? If they are, it will be by this people.

( Source: Journal of Discourses 12:119-20 )