“it will be objected that a constantly increasing population makes resistance and conservation a hopeless battle. this is true. unless a way is found to stabilize the nation's population, the parks can not be saved. or anything else worth a damn. wilderness preservation, like a hundred other good causes, will be forgotten under the overwhelming pressure of a struggle for mere survival and sanity in a completely urbanized, completely industrialized, ever more crowded environment. for my own part i would rather take my chances in a thermonuclear war than live in such a world.”

“The automobile, which began as a transportation convenience, has become a bloody tyrant (50,000 lives a year), and it is the responsibility of the park service, as well as that of everyone else concerned with preserving both wilderness and civilization, to begin a campaign of resistance.”

“the wilderness should be preserved for political reasons. We may need it someday not only as a refuge from excessive industrialism but also as a refuge from authoritarian government, from political oppression. Grand Canyon, Big Bend, Yellowstone, and the High Sierras may be required to function as bases for guerrilla warfare against tyranny...The value of wilderness, on the other hand, as a base for resistance to centralized domination is demonstrated by recent history. In Budapest and Santo Domingo, for example, popular revolts were easily and quickly crushed because an urbanized environment gives the advantage to the power with technological equipment. But in Cuba, Algeria, and Vietnam the revolutionaries, operating in mountain, desert, and jungle hinterlands with the active or tacit support of a thinly dispersed population, have been able to overcome or at least fight to a draw official establishment forces equipped with all of the terrible weapons of twentieth century militarism.”

“To all accusations of excessive development the administrators can reply, as they will if pressed hard enough, that they are giving the public what it wants, that their primary duty is to serve the public not preserve the wilds. "Parks are for people" is the public relations slogan, which decoded means that the parks are for people-in-automobiles. Behind the slogan is the assumption that the majority of Americans, exactly like the managers of the tourist industry, expect and demand to see their national parks from the comfort, security and convenience of their automobiles.Is this assumption correct? Perhaps. Does that justify the continued and increasing erosion of the parks? It does not.”

“Industrial tourism is a threat to the national parks. But the chief victims of the system are the motorized tourists. They are being robbed and robbing themselves. So long as they are unwilling to crawl out of their cars they will not discover the treasures of the national parks and will never escape the stress and turmoil of the urban-suburban complexes which they had hoped, presumably, to leave behind for a while.”

“We can have wilderness without freedom; we can have wilderness without human life at all, but we cannot have freedom without wilderness, we cannot have freedom without leagues of open space beyond the cities, where boys and girls, men and women, can live at least part of their lives under no control but their own desires and abilities, free from any and all direct administration by their fellow men.”

“I would not sacrifice a single living mesquite tree for any book ever written. One square mile of living desert is worth a hundred 'great books' - and one brave deed is worth a thousand.”