38 BIOLOGY AND SOCIAL PROBLEMS 



From the cradle to the grave we work to train 

 it. Our early childish plays and lessons are in- 

 tended to awaken it into activity. The school, 

 the college, the university work upon it ; our 

 whole educational system is devised to bring 

 into full efficiency this cubic inch of our body. 

 It must be enriched with experience ; it must 

 be trained to make wise decisions, to call forth 

 acts of friendly service. If you have doubts 

 of the enormous social significance of this cu- 

 bic inch of nervous tissue, look upon the in- 

 dividual in which it permanently breaks down, 

 a useless member of society, a charge upon 

 the state, if not upon the race. 



