from the Standpoint of Science 21 



munificent provision for the progress of all 

 forms of life. Nurture and education may 

 immensely aid the social machine, but they 

 must be repeated generation by generation ; 

 they will not in themselves reduce the ten- 

 dency to the production of bad stock. Con- 

 scious or unconscious selection can alone 

 bring that about. 



What I have said about bad stock seems to 

 me to hold for the lower races of man. How 

 many centuries, how many thousand of years, 

 have the Kaffir or the negro held large 

 districts in Africa undisturbed by the white 

 man ? Yet their intertribal struggles have 

 not yet produced a civilization in the least 

 comparable with the Aryan. Educate and 

 nurture them as you will, I do not believe 

 that you will succeed in modifying the stock. 

 History shows me one way, and one way 

 only, in which a high state of civilization has 

 been produced, namely, the struggle of race 

 with race, and the survival of the physically 

 and mentally fitter race. If you want to 

 know whether the lower races of man can 

 evolve a higher type, I fear the only course 

 is to leave them to fight it out among 



