PSYCHIC ADAPTATION 119 



individuals, by ever-increasing differentiations, help 

 to integrate a super-organic society more perfect 

 every day. So that we can establish the following 

 analogy : The neurona is to the individual psychic 

 evolution what man is to the super-organic social 

 evolution. The great evolutionary law attains to 

 the social organism by the same road and by the 

 same processes of adaptation common to all beings. 

 The more numerous the psychic element in this 

 case men the more exact, the more complex, the 

 more distinct, and the more differentiated and co- 

 ordinated the human intelligence. 



This prodigous evolution has no limits, no more 

 than has Nature herself. It cannot be stated to 

 what point of progress the super-organic organism 

 will attain in a state of growth ever continuous and 

 every moment more extended. By the law of 

 correspondence, the organic substance, by virtue of 

 its admirable plasticity, registers all these perfec- 

 tions, and by its adaptation and differentiation the 

 organic substance continues to integrate all the 

 external in human consciousness. 



