SOCIAL EVOLUTION AS A BIOLOGICAL PROCESS 277 



one, but freedom of conduct must never result in tres- 

 pass upon the equal rights of others to make the most 

 of their abilities and opportunities. 



To summarize, then, social evolution is a continuous 

 process accomplished through differentiation and divi- 

 sion of labor among the components of biological asso- 

 ciations. Although the total form remains the same 

 everywhere, progress has been made in content through 

 the further subordination of selfish to altruistic conduct ; 

 only by this means does an individual gain liberty to 

 pursue the social task for which he is best fitted by 

 nature. 



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