488 HEREDITY AND ENVIRONMENT 



preme duty of society and of all who love their 

 fellow men. 



But I think that notable human improve- 

 ment can take place only upon two conditions : 



(1) The physical and intellectual improve- 

 ment of the individual through environment 

 and training must not interfere with his racial 

 and ethical obligations. Individual freedom 

 must be subordinated to racial welfare. 



(2) The promotion of human evolution must 

 be undertaken by society as its greatest work. 

 Not only has society greater freedom and 

 greater power than the individual but it per- 

 sists while men come and go. 



Our hereditary lines are so interwoven with 

 those of other races and will be so entangled 

 with other lines in the future that any selfish or 

 narrow policy of improving our family or class 

 can have little permanent value. We shall rise 

 only as the race rises. Indeed when we con- 

 sider all the influences of our fellow men upon 

 our development, when we consider our he- 

 reditary connections with multitudes of men 

 and women of the past, when we think of the 

 nexus of hereditary strands which are woven 



