“Coal in truth stands not beside, but entirely above, all other commodities. It is the material source of the energy of the country—the universal aid—the factor in everything we do. With coal almost any feat is possible or easy; without it we are thrown back into the laborious poverty of earlier times.”
The Coal Question (1865)
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William Stanley Jevons 69
English economist and logician 1835–1882Related quotes

CNN Democratic Presidential Town Hall http://www.politifact.com/truth-o-meter/article/2016/may/10/context-hillary-clintons-comments-about-coal-jobs/ in Columbus, Ohio (13 March 2016)
Presidential campaign (April 12, 2015 – 2016)

In conversation with Henry Ford and Harvey Firestone (1931); as quoted in Uncommon Friends : Life with Thomas Edison, Henry Ford, Harvey Firestone, Alexis Carrel & Charles Lindbergh (1987) by James Newton, p. 31.

Source: [Will The Real Alberta Please Stand Up, University of Alberta Press, 2010, 312, Geo Takach]

Political questionnaire response (1952)
Source: Last and First Men (1930), Chapter I: Balkan Europe; Section 4, “The Russo-German War” (pp. 29-30)

Daily Herald, 25 May 1945
Speech at Blackpool, 24 May 1945.
1940s

Source: Cosmos: A Co-creator's Guide to the Whole-World (2010), p. ix.
Source: The Evolution of Civilizations (1961) (Second Edition 1979), Chapter 1, Scientific Method and the Social Sciences, p. 35