98 SUPER-ORGANIC EVOLUTION 



multiplication of its cells as by their morphological 

 differentiation." 



From all these questions, as interesting as they 

 are instructive, and without which sociology would 

 have no possible raison d'dtre, one draws a conclu- 

 sion of paramount value : The brain of man still 

 continues its psychic evolution. The mere enuncia- 

 tion of this suffices for it to appear as a revelation 

 rich in its consequences; the brain of man is 

 still in full course of evolution ; the neuronas 

 and their cerebral cortex are not only increasing 

 in number and extent, but are also becoming 

 perfect by differentiation. This fact, deduced 

 from embryology and comparative anatomy, from 

 phylogeny and ontogeny, awakens a new world 

 of ideas. 



All the fancies of religions, philosophies, and 

 even poets with regard to the intelligence are a 

 mere bagatelle ; the future of man has a limitless 

 horizon. Nature abandons not her* work, nor has 

 she exhausted all her resources. In the need to 

 adapt the internal to the external, she follows a 

 consistent and tenacious elaboration, and in this 

 extraordinary progress she will not only augment 

 the number of elements, but will improve their 

 form ; the number of collaterals will grow, and 

 with these the number and extension of the asso- 

 ciations, allowing always a greater complexity, 



