8 REPRODUCTION 



we call the "social and economic conditions," and it is in 

 connection with these that the great puzzles of life arise. 

 Often we see conditions in the relations of men to one 

 another which cause injustice and suffering, and we may, 

 by studying such situations, find that we ourselves by our 

 manner of living are partly responsible for such conditions. 

 Then evidently the thing for us to do is not merely to 

 "adjust ourselves to environment" as environment 

 happens to be, but to seek wisely to alter such features 

 of the man-made environment as cause unjust hardships 

 to others. So we must not take "adjustment to environ- 

 ment" as one simple and sufficient rule of human life, 

 however well it may do for plants and animals. We 

 alone of living things have the powers of reason that have 

 created artificial conditions, and we must constantly use 

 these powers so as to alter these conditions that the best 

 results for all may prevail. Thus we see that the best 

 adjustment to environment on our part may often be an 

 effort to change the environment in some respects, at 

 least in its human or artificial parts. 



