Quotes from book
A Sand County Almanac
A Sand County Almanac: And Sketches Here and There is a 1949 non-fiction book by American ecologist, forester, and environmentalist Aldo Leopold. Describing the land around the author's home in Sauk County, Wisconsin, the collection of essays advocate Leopold's idea of a "land ethic", or a responsible relationship existing between people and the land they inhabit. Edited and published by his son, Luna, a year after Leopold's death, the book is considered a landmark in the American conservation movement.

“It must be poor life that achieves freedom from fear.”
“Arizona and New Mexico: On Top”, p. 126.
A Sand County Almanac, 1949, "Arizona and New Mexico: On Top," & "Arizona and New Mexico: Thinking Like a Mountain"

“Wilderness is the raw material out of which man has hammered the artifact called civilization.”
Source: A Sand County Almanac, 1949, "Wilderness", p. 188.

“Only the most uncritical minds are free from doubt.”
Source: A Sand County Almanac, 1949, "Conservation Esthetic", p. 165.

“What a dull world if we knew all about geese!”
“March: The Geese Return”, p. 20.
A Sand County Almanac, 1949, "January Thaw", "February: Good Oak" & "March: The Geese Return"

Source: A Sand County Almanac, 1949, "Conservation Esthetic", p. 176.
Source: A Sand County Almanac and Sketches Here and There
Context: The trophy-recreationist has peculiarities that contribute in subtle ways to his own undoing. To enjoy he must possess, invade, appropriate. Hence the wilderness that he cannot personally see has no value to him. Hence the universal assumption that an unused hinterland is rendering no service to society. To those devoid of imagination a blank place on the map is a useless waste; to others, the most valuable part.

“The modern dogma is comfort at any cost.”
“November: Axe-in-Hand”, p. 71.
Source: A Sand County Almanac, 1949, "November: Axe-in-Hand," "November: A Mighty Fortress," and "December: Pines above the Snow"

“Education, I fear, is learning to see one thing by going blind to another.”
Source: A Sand County Almanac, 1949, Manitoba: Clandeboye, p. 168.
Source: A Sand County Almanac and Sketches Here and There

Source: A Sand County Almanac, 1949, "The Land Ethic", p. 224-225.
Source: A Sand County Almanac and Sketches Here and There
Context: Examine each question in terms of what is ethically and esthetically right, as well as what is economically expedient. A thing is right when it tends to preserve the integrity, stability, and beauty of the biotic community. It is wrong when it tends otherwise.

“Wisconsin: Marshland Elegy”, p. 101.
A Sand County Almanac, 1949, "Wisconsin: Marshland Elegy," "Wisconsin: The Sand Counties" "Wisconsin: On a Monument to the Pigeon," and "Wisconsin: Flambeau"
Source: A Sand County Almanac and Sketches Here and There
Context: To build a road is so much simpler than to think of what the country really needs. A roadless marsh is seemingly as worthless to the alphabetical conservationist as an undrained one was to the empire-builders. Solitude, the one natural resource still undowered of alphabets, is so far recognized as valuable only by ornithologists and cranes.
Thus always does history, whether of marsh or market place, end in paradox. The ultimate value in these marshes is wildness, and the crane is wildness incarnate. But all conservation of wildness is self-defeating, for to cherish we must see and fondle, and when enough have seen and fondled, there is no wilderness left to cherish.

“Arizona and New Mexico: Thinking Like a Mountain”, p. 133.
This is a paraphrase of Thoreau: see explanation by the Walden Woods project http://www.walden.org/Library/Quotations/The_Henry_D._Thoreau_Mis-Quotation_Page).
Source: A Sand County Almanac, 1949, "Arizona and New Mexico: On Top," & "Arizona and New Mexico: Thinking Like a Mountain"

“Nonconformity is the highest evolutionary attainment of social animals.”
"A Man's Leisure Time," 1920; Published in Round River, Luna B. Leopold (ed.), Oxford University Press, 1966, p. 8.
1920s
Source: A Sand County Almanac and Sketches Here and There

Source: A Sand County Almanac, 1949, Foreword, p. viii.
Context: Conservation is getting nowhere because it is incompatible with our Abrahamic concept of land. We abuse land because we regard it as a commodity belonging to us. When we see land as a community to which we belong, we may begin to use it with love and respect. There is no other way for land to survive the impact of mechanized man, nor for us to reap from it the aesthetic harvest it is capable, under science, of contributing to culture.