Aldo Leopold Quotes
No important change in ethics was ever accomplished without an internal chage in our intellectual emphasis, loyalties, affections, and convictions.
Citations
Leopold, Aldo. A Sand County Almanac, and Sketches Here and There. Oxford University Press, 1949, p. 209.
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Aldo Leopold was an American author, philosopher, naturalist, scientist, ecologist, forester, conservationist, and environmentalist. He was a professor at the University of Wisconsin and is best known for his book A Sand County Almanac (1949), which has sold more than two million copies.