Thomas L. Friedman
Publisher: Farrar Straus & Giroux (2008)

At some point we also need to get beyond these economic and even practical arguments and get back in touch with the deepest truth of all: Green is a value that needs to be preserved in and of itself, not because it is going to make your bank account richer but because it makes life richer and always has.  At the end of the day, that is what an 'ethic of conservation' is also about.  An ethic of conservation declares that maintaining our natural world is a value that is impossible to quantify but also impossible to ignore, because of the sheer beauty, wonder, joy, and magic that nature brings to being alive.