1. Nature is composed of four orders - physical, bio, animal, and human. There is a relationship of mutual fulfillment between these orders where each order enriches the others.
2. The physical, bio, and animal orders naturally fulfill each other. They also fulfill human beings when humans have the right understanding.
3. For humans to realize this mutual fulfillment in nature, they need only understand that harmony is inherent and live accordingly. Then the mutual fulfillment between all four orders will be achieved.