Volume II: The Great Treatise (大傳 [Dazhuan]). This is a translation of a series of essays on the Yijing drawn from the fifth and sixth of the Ten Wings, with commentary. How does human society arise from the primordial world? How can it reflect Heaven’s wisdom and integrate with the Earth’s natural systems? How can humanity tame and structure society so it is socially and ecologically harmonious? How can we entrain the wisdom and energy of sacred natural principles — such as Heaven, Earth, the elements, and the seasons — into social structures and human interactions? The Yijing addressed these questions millennia ago. The Yijing teaches us how to engineer social ecologies to be resonant with natural wisdom, manifesting as inclusive, environmentally attuned, and caring. These advanced social ecologies — which I have called “enlightened society”— support the journey of awakening for every part of society. The Yijing arose at the dawn of written human history, but its principles are fresh. By joining the Yijing with the wisdom of Buddhism and the Shambhala traditions, this work attempts to explore and renew Yijing’s metaphors, uncover its structures, and appreciate its wisdom in terms that are accessible to the modern reader. This translation and commentary offers the Yijing as a resource and guide for virtuous leaders, those who live to serve others, and those who aspire to foster healthy, awake societies in these challenging times.