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 planet’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.