Good book. The author suggests that people need to shift from city-state mode to tribal mode. If we don't shift, we'll smother each other & irreparably fuck up our beautiful mothership. One way to bring about the shift is by telling ourselves new stories.
I like this story (pulled from one of the book's last chapters):
Among your own roots are thousands of generations of parents who survived sustainably, well enough to eventually give birth to you. You carry within you DNA descended from those very people. Image the chain of five thousand mothers who gave birth to your ancestors and eventually you -- leading all the way back to tribal life, and all the way forward to you.
Or more simply put (via the lyrics to The Edge of a Cliff by The Streets):
For billions of years since the outset of time
Every single one of your ancestors survived
Every single person on your mum and dad's side
Successfully looked after and passed onto you life
What are the chances of that like?
It comes to me once in a while
And everywhere I tell folk it gets the best smile