“The economic policy issues that we debate today—trade policy, inflation, the proper role of government, the eradication of poverty, and the means of raising the rate of economic growth—have been discussed by economists for more than two centuries. Many of today’s economic policies—both the good ones and the bad—are the result of the ideas of those past economists. And many of today’s debates about economic policy can be understood only by those who have at least some familiarity with the ideas of earlier economists.
The giants of economic science during the past two hundred years have been men concerned with the critical policy issues of their time. They studied the working of the economy in order to advocate better economic policies. But despite their concern with policy, they were not polemicists or politicians but men who sought to persuade their contemporaries in government and in the broader public by analysis and evidence that would meet the standards of professional debate.”
Martin Feldstein (1989), Foreword to New Ideas from Dead Economists by Todd Buchholz.
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Martin Feldstein 9
American economist 1939–2019Related quotes
David Warsh, "The Enormous Black Box" http://www.economicprincipals.com/issues/2009.12.13/841.html (2009)

Source: "Money and Finance in the Macro-Economic Process" (1982), p. 12

Robert Fogel (1993) " Economic Growth, Population Theory, And Physiology: The Bearing Of Long-Term Processes On The Making Of Economic Policy http://www.nobelprize.org/nobel_prizes/economic-sciences/laureates/1993/fogel-lecture.pdf." Nobel lecture.
Roger E. Backhouse and Bradley W. Bateman, ch.1 "Keynes Returns, but Which Keynes?" Capitalist revolutionary : John Maynard Keynes (2011).

"The American Economy: Its Substance and Myth," quoted in Years of the Modern (1949), edited by J.W. Chase
Context: In the usual (though certainly not in every) public decision on economic policy, the choice is between courses that are almost equally good or equally bad. It is the narrowest decisions that are most ardently debated. If the world is lucky enough to enjoy peace, it may even one day make the discovery, to the horror of doctrinaire free-enterprisers and doctrinaire planners alike, that what is called capitalism and what is called socialism are both capable of working quite well.

Quoted in We Desperately Need Marianne Williamson’s Message, https://theintercept.com/2019/08/05/marianne-williamson-2020-presidential-campaign/ The Intercept, Jon Schwarz (5 August 2019)