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“The crucial fact about sustainability is that it is not a micro phenomenon: there can be no such thing as a “sustainableâ€� house, office building, or household appliance, for the same reason that there can be no such thing as a one-person democracy or a single-company economy.”
― David Owen, Green Metropolis: Why Living Smaller, Living Closer, and Driving Less are the Keys to Sustainability

“One of the least meaningful and most overused words in the English language is 'sustainability.' For most Americans, it means something like 'pretty much the way I live right now, though maybe with a different car.' A good test of any activity or product described as sustainable is to multiply it by 300 million (the approximate current population of the United States) and then by 9 or 10 billion (the expected population of the world by midcentury) and see if it still seems green. This is not an easy test to pass”
― David Owen, The Conundrum: How Scientific Innovation, Increased Efficiency, and Good Intentions Can Make Our Energy and Climate Problems Worse