EVOLUTION AND SOCIOLOGY 6i 



the vertical section, and he who has to do with 

 this living, moving, and ascending thing must treat 

 it from the dynamic point of view. 



The significant thing for him is the study of 

 Evolution on its working side. And he will find 

 that nearly all the phenomena of social and 

 national life are phenomena of these two prin- 

 ciples — the Struggle for Life, and the Struggle for 

 the Life of Others. Hence he must betake him- 

 self in earnest to see what these mean in Nature, 

 what gathers round them as they ascend, how each 

 acts separately, how they work together, and whither 

 they seem to lead. More than ever the method of 

 Sociology must be biological. More urgently than 

 ever " the time has come for a better understand- 

 ing and for a more radical method ; for the social 

 sciences to strengthen themselves by sending their 

 roots deep into the soil underneath from which 

 they spring ; and for the biologist to advance over 

 the frontier and carry the methods of his science 

 boldly into human society, where he has but to 

 deal with the phenomena of life, where he encounters 

 life at last under its highest and most complex 

 aspect." ^ 



Would that the brilliant writer whose words these 

 are, and whose striking work appears while these 

 * Benjamin Kidd, Social Evolution^ p. 28. 



