BIOLOGY AND HUMAN WELFARE 425 



is encouraging to know that we have behind us not a descent, but 

 an ascent, and that there is some appreciable momentum in the 

 right direction." Far from depriving life of its mystery, biology 

 affords a sublime picture of the interrelatedness of living things 

 and still more inextricably interweaves human life with that of all 

 Nature. 



