134 THE BIDDLE OF THE UNIVERSE. 



condition of his environment as every other psychic 

 activity. The character of the inclination was 

 determined long ago by heredity from parents and 

 ancestors ; the determination to each particular act 

 is an instance of adaptation to the circumstances of 

 the moment wherein the strongest motive prevails, 

 according to the laws which govern the statics of 

 emotion. Ontogeny teaches us to understand the 

 evolution of the will in the individual child. Phylo- 

 geny reveals to us the historical development of the 

 will within the ranks of our vertebrate ancestors. 



