"We are the first generation in history from whom, nature needs, fewer babies and more wisdom...
hundreds of thousands of years ago if a woman reached menopause, basically the message of nature is,'You can go now. We've gotten what we need.' So I think the old brain in all of us still has this sense, 'I should die now. There's no longer a physical/biological propagation
that will emanate from me.' But in fact none of the babies will survive if we do not become fundamentally wiser."