Races and varieties of the human family appear and disappear, but humanity remains and will remain forever. The American people will one day be truer to this idea than now, and will say with Scotia's inspired son, "A man's a man for a' that." When that day shall come, they will not pervert and sin against the verity of language as they now do by calling a man of mixed blood, a negro; they will tell the truth.

The Future of the Colored Race (1886)