It is tremendously worrisome that we don't talk about nature anymore. We talk about natural resources as if everything had a price tag. You can't buy spiritual values at a shopping mall. The things that uplift the spiritan old-growth forest, a clear river, the flight of a golden eagle, the howl of a wolf, space and quiet without motorsare intangibles. Those are the values that people do look for and that everyone needs.
George Schaller in National Geographic.