234 BIOLOGICAL ASPECTS OF HUMAN PROBLEMS 



of eliminating from the world, through the operation 

 of natural selection, innumerable individuals whose 

 faults are those which are so readily grafted on un- 

 stable nervous systems which have never learned 

 the art of inhibition. So quietly does the process of 

 exclusion go on, so little obvious may be the sexual 

 basis of this exclusion, that the selective process 

 proceeds for the most part without the definite con- 

 sciousness of its victims who often derive a piti- 

 ful satisfaction from imputing to accident or ill luck, 

 or the malice of providence, those misfortunes which 

 they have brought upon themselves. Who can doubt 

 that, in time, when the perils as well as the benefits 

 of the great gift of racial instinct are seen in the white 

 light of biological truth, there will be a large gain in 

 self-control and consequently an incalculable saving 

 of human misery ? 



