546 HUMAN PROGRESS 



phasized the difl&culty of this struggle and the great 

 progress that has been made in some directions. No 

 one can fail to realize, however, that disease still consti- 

 tutes a serious threat to personal security, and that only 

 by continued and prolonged exertions on the part of 

 medical investigators can we hope to see this menace 

 reduced to a degree where it will cease to be a very 

 present concern. 



The Destructive Competition of Man with Man 

 on the individual scale has been reduced, in civilized 

 communities, to the attacks upon society by the criminal 

 classes. Security against this menace obviously depends 

 on increasingly efficient control of criminals. The vast 

 dcstructiveness of war will be ended when man realizes 

 that progress, both individual and racial, depends upon 

 securing time and opportunity for those activities 

 which enrich his life, and that to the extent to which he 

 devotes time and effort to securing himself against the at- 

 tacks of his fellowman or to fitting himself to attack them 

 in turn, he is denying himself opportunity for develop- 

 ment along lines that are really worth while. The prac- 

 tical means to bring to an end the destructive activity of 

 man against man must finally be the adjustment of 

 human relationships on a basis — not of selfish prejudice, 

 but of unselfish application of scientific principles. 



Cooperation a Biological Necessity for Progress. — 

 At this point it would be well for the readier to recall that 

 progress among all sorts of organisms has been repeatedly 

 shown to depend on specialization and harmonious co- 

 operation. This is equally true of the parts of a man's 

 body or of the individuals of animal and plant asso- 

 ciations. Much of man's progress in the past has rested 

 on this same secure foundation. When this truth is once 

 fully realized, destructive competition — whether of war- 

 ing nations, industrial strife, or individual combat — will 

 be soon to be at worst a horror and at best a silly waste 

 of time, and will be replaced by constructive efforts 

 directed to the enrichment of life. 



