What is a civilization worth if it cannot protect the natural conditions that gave birth to it?

— Clive Hamilton, Defiant Earth
We can scarcely be warranted in supposing that all the productive powers of [Earth’s] surface can be made subservient to the use of man, in exclusion of all the plants and animals not entering into his stock of subsistence.
— James Madison, Address to the Agricultural Society of Albemarle, Virginia (1818)
More broadly what does it mean to be human when this means to be part of a global force that changes everything—even the future of an entire planet? What does nature even mean in an age of humans?
— Erle Ellis