“Roosevelt remarked on the anomaly whereby man, as he progressed from savagery to civilization, used up more and more of the world’s resources, yet in doing so tended to move to the city, and lost his sense of dependence on nature. Lacking that, he also lost his foresight, and unwittingly depleted the inheritances of his children. “We cannot, when the nation becomes fully civilized and very rich, continue to be civilized and rich unless the nation shows more foresight than we are showing at this moment.”