"The 'environmental crisis' has happened because the human household or economy is in conflict at almost every point with the household of nature. We have built our household on the assumption that the natural household is simple and can be simply used. We have assumed increasingly over the last five hundred years that nature is merely a supply of 'raw materials,' and that we may safely possess those materials by taking them.... And so we will be wrong if we attempt to correct what we perceive as 'environmental' problems without correcting the economic oversimplification that caused them."