One of the fruitful sources, as I hold it, of the errors which prevail in our country, is the theory that this is a government of one people; that the government of the United States was formed by a mass; and therefore it is taken that all are responsible for the institutions and policies of each. The government of the United States is a compact between the sovereign members who formed it; and if there be one feature common to all the colonies planted upon the shores of America, it was the steady assertion of, and uncompromising desire for, community independence.

Senate speech, (7 May 1860).