James Madison, who knew perhaps as well as any one what the makers of the Constitution meant, said, 'We intend this Constitution to be the great charter of Human Liberty to the unborn millions who shall enjoy its protection, and who should never see that such an institution as slavery was ever known in our midst'. And the Congress of 1787, in resigning its functions, echoed the meaning of his words in saying, 'Let it never be forgotten that the cause of the United States is the cause of human natureâ€'†— not of white men nor black men nor red men nor brown men — but of man, of mankind
George William Curtis