We hold these truths to be self-evident: That the real, physical world is the source of our own lives, and the lives of others. A weakened planet is less capable of supporting life, human or otherwise.
Thus the health of the real world is primary, more important than any social or economic system, because all social or economic systems are dependent upon a living planet.
It is self-evident that to value a social system that harms the planetâ€™s capacity to support life over life itself is to be out of touch with physical reality.
That any way of life based on the use of nonrenewable resources is by definition not sustainable.
That any way of life based on the hyper-exploitation of renewable resources is by definition not sustainable: if, for example, fewer salmon return every year, eventually there will be none. This means that for a way of life to be sustainable, it must not harm native communities: native prairies, native forests, native fisheries, and so on.
That the real world is interdependent, such that harm done to rivers harms those humans and nonhumans whose lives depend on these rivers, harms forests and prairies and wetlands surrounding these rivers, harms the oceans into which these rivers flow. Harm done to mountains harms the rivers flowing through them. Harm done to oceans harms everyone directly or indirectly connected to them.