XV MAN 1 8s 



of much, though we do know that full knowledge is largely 

 a matter of time and means. One day we shall have it, 

 and the day may be nearer than most suspect. Whether 

 we make use of it- will depend in great measure upon 

 whether we are prepared to recognise facts, and to modify 

 or even destroy some of the conventions which we have 

 become accustomed to regard as the foundations of our 

 social life. Whatever be the outcome, there can be little 

 doubt that the future of our civilisation, perhaps even the 

 possibility of a future at all, is wrapped up with the 

 recognition we accord to those who live unseen and in- 

 articulate within us — the fateful race of gametes so 

 irrevocably bound to us by that closest of all ties, heredity. 



