From the very beginning of humanity, it has been human nature to strive to create more favorable environments in which to live. It is in our nature, then, to live in artificial environments. Over the millennia, we have come to see that the best environment for humans is the environment of liberty. This is the environment that allows and encourages us to live best according to our nature. One achievement of the environment of liberty has been the production of sufficient prosperity that many people can now afford to purchase high quality environmental amenities. Our interest in such amenities, however, should not and need not be purchased at the expense of liberty.
William C. Dennis, "Liberty and the Place of Man in Nature," Journal of Markets & Morality 3, no. 2 (Fall 2000): 190-203