I believe that there are human stocks with whom it is physically unwise to intermarry, but to think that these stocks are all colored or that there are no such white stocks is unscientific and false.
W. E. B. Du Bois' statement of 1910, as quoted in Gregory Michael Dorr "Fighting Fire with Fire: African Americans and Hereditarian Thinking, 1900-1942" by Gregory Michael Dorr on Wake Forest University Homepage, March 13, 2006.
