"It is possible that there are wide variations in the mental adaptability of contemporary mankind. It is possible that the mass of contemporary mankind may not be as readily accessible to fresh ideas as the younger, more childish minds of earlier generations, and it is also possible that hard imaginative thinking has not increased so as to keep pace with the expansion and complication of human societies and organisations. That is the darkest shadow upon the hopes of mankind.
But my own temperament makes it unavoidable for me to doubt, as I have said, that there will not be that small minority which will succeed in seeing life out to its inevitable end.
I'd say he was right, knowing the capacity and the planned acitions of the nuclear arsenals today.