“A world without huge regions of total wilderness would be a cage; a world without lions and tigers and vultures and snakes and elk and bison would be - will be - a human zoo. A high-tech slum.”

“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.”

“A man could be a lover and defender of the wilderness without ever in his lifetime leaving the boundaries of asphalt, powerlines, and right-angled surfaces. We need wilderness whether or not we ever set foot in it. We need a refuge even though we may never need to set foot in it. We need the possibility of escape as surely as we need hope; without it the life of the cities would drive all men into crime or drugs or psychoanalysis.”

“I would like to evoke the sense of wonder and magic in the reader but without invoking the mystical, the supernatural or the transcendent.”

“i was accused of being against civilization, against science, against humanity. naturally, i was flattered and at the same time surprised, hurt, a little shocked. he repeated the charge. but how, i replied, being myself a member of humanity (albeit involuntarily, without prior consultation), could i be against humanity without being against myself, whom i love - though not very much; how can i be against science, when i gratefully admire, as much as i can, thales, democritus, aristarchus, faustus, paracelsus, copernicus, galiley, kepler, newton, darwin and einstien; and finally, how could i be against civilization when all which i most willingly defend and venerate - including the love of wilderness - is comprehended by the term”

“To the question: Wilderness, who needs it? Doc would say: Because we like the taste of freedom, comrades. Because we like the smell of danger. But, thought Hayduke, what about the smell of fear, Dad?”

“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.”