This book posits that humanity has been passing through stages of collective growth towards integration and unity and that our current collective crises — climate change, financial upheavals, proliferation of nuclear weapons, gross human rights atrocities, mismanagement of critical natural resources — merely manifest our passage through a turbulent and now overly prolonged adolescence.

It persuasively argues that the way to a truly peaceful world is for humanity to take the next step towards maturity by establishing collective decision-making institutions that can evolve into a world federation of nation-states. Only then will we have a truly peaceful world.