The Destiny of Man. 49 



furrows grow deeper and more sinuous, 

 and new ones appear ; and in man these 

 phenomena come to have great signifi- 

 cance. The cerebral surface of a human 

 infant is like that of an ape. In an adult 

 savage, or in a European peasant, the fur- 

 rowing is somewhat marked and compli- 

 cated. In the brain of a great scholar, 

 the furrows are very deep and crooked, 

 and hundreds of creases appear which are 

 not found at all in the brains of ordinary 

 men. In other words, the cerebral surface 

 of such a man, the seat of conscious men- 

 tal life, has become enormously enlarged 

 in area ; and we must further observe that 

 it goes on enlarging in some cases into ex- 

 treme old age 6 



Putting all these facts together, it be- 

 comes plain that in the lowest animals, 

 whose lives consist of sundry reflex ac- 

 tions monotonously repeated from gener- 

 ation to generation, there can be nothing, 

 or next to nothing, of what we know as 

 consciousness. It is only when the life 

 4 



