I have followed John Heron's development for the last few years, after reading the earlier Sacred Science. After the period of state-supported mono-religions, after the Reformation, after the era of the mixing of world religions and the emergence of authoritarian cults, we needed something completely different.A bottom-up, peer to peer, way to search for truth together. Jorge Ferrer provided some of the theology, Heron provided the practice of cooperative inquiry, but here in this volume we finally have both elements together, a theory and a practice. I therefore have no hesitation in calling this a landmark book. What could be more important for an individual than the spiritual search for meaning? What could be more important for a civilization than the ability to do this in a democratic and participative way. The demand was there, but until reading this book, we were largely groping in the dark. No more.