“Land-use ethics are still governed wholly by economic self-interest, just as social ethics were a century ago.”
Source: A Sand County Almanac, 1949, "The Land Ethic", p. 209.
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Aldo Leopold 130
American writer and scientist 1887–1948Related quotes

"Conservation" (c. 1938); Published in Round River, Luna B. Leopold (ed.), Oxford University Press, 1966, p. 157.
1930s

Chap. 3 : Freedom and Consequences
1990s, On Ethics and Economics (1991)
Source: 1940s, Economic Analysis, 1941, p. 34. (rev. ed. 1948) cited in: J.P. Roos (1973) Welfare Theory and Social Policy: A Study in Policy Science - Nummer 4. p. 102

Tribune Magazine, Building the future politics on our toxic present, 15 June 2009 http://www.tribunemagazine.org/2009/06/building-the-future-politics-on-our-toxic-present/

Source: Poverty (1912), p. 12
Context: During the entire last century many of the best minds were engaged in the study of social and economic questions. At the beginning of this new century we are still asking "riddles about the starving." After many years of most elaborate investigations printed in thousands of volumes issued by federal and state governments we are almost as far from any definite knowledge concerning the extent of poverty as we have ever been.