Where the environment is too soft and luxurious and no strife is required for survival, not only are weak strains and individuals allowed to survive and encouraged to breed but the strong types also grow fat mentally and physically.

The intelligence and ability of a colored person are in pretty direct proportion to the amount of white blood he has, and … most of the positions of leadership, influence, and prominence in the Negro race are held not by real Negroes but by Mulattoes, many of whom have very little Negro blood.