I02 AMERICAN MEN OF LETTERS [102 



ability no person achieves success, lack of opportunity 

 may exercise an absolute veto on the aspirations for 

 advancement of persons possessing such natural ability. 

 There is no rational ground for contention between 

 the biologist and the sociologist. They are co-workers, 

 not opponents. The biologist may well continue his 

 study of heredity. The sociologist eagerly awaits rea- 

 soned conclusions on the subject of racial improvement 

 through eugenics. Meanwhile the sociologist is justified 

 in advocating, with all the force at his command, the 

 extension of those fundamental American privileges, 

 economic and social opportunity and education, by 

 means of which all the innate ability which exists may 

 be given the environment necessary for its maximum 

 development. 



