1 86 Heredity and Social Progress 



Set free the series of natural changes, and the 

 final results will take care of themselves. A 

 surplus includes regeneration and new emo- 

 tions, forces which will act and react until the 

 whole class has been brought up to the level 

 of its environment. Two races in one envi- 

 ronment cannot be kept apart except by some 

 exploitation that harms the weaker one of 

 them. The amplest protection and a surplus- 

 yielding discipline will stimulate the forces in 

 a lower class which will ultimately raise them 

 to the level of the highest. Each new disci- 

 pline yields a new surplus which offers emotion 

 and regeneration a fresh opportunity to evoke 

 natural qualities. The more freely we give to 

 the weak, the more is gained by the strong. 

 The morality of similar men is embodied in 

 the Golden Rule, but for dissimilar men the 

 law of service is yet higher. Do unto those 

 unlike yourself what they cannot do for them- 

 selves. Let your surplus energy go out through 

 your natural character for the benefit of those 

 who have it not. 



Progress cannot end while the natural growth 

 in differentiated strength is followed by a con- 



