Treat the Earth well.
It was not given to you by your parents,
It was loaned to you by your children.
We do not inherit the Earth from our ancestors,
we borrow it from our children.

Environmental ethics is the part of environmental philosophy which considers extending the traditional boundaries of ethics from solely including humans to including the non-human world. It is a branch of applied philosophy that studies the conceptual foundations of environmental values as well as more concrete issues surrounding societal attitudes, actions, and policies to protect and sustain biodiversity and ecological systems.