"...; the few distinguished Negroes, so called, of America – such as Douglass, Booker Washington, Du Bois – have been, I believe, in all cases mulattoes or had some proportion of white blood. We may fairly ascribe the incapacity of the Negro race to form a nation to the lack of men endowed with the qualities of great leaders, even more than to the lower level of average capacity" (McDougall, William., The Group Mind, p.187, Arno Press, 1973; Copyright, 1920 by G.P. Putnam's Sons).