"The Effect of Government on Economic Efficiency." 1988
“Having written all that, I must admit that there is some soul searching going on in the economics profession. As obvious as the financial crisis seems after the fact, few economists saw it coming (with some notable exceptions). Virtually none anticipated how severe it might be. In the fall of 2005, several prominent economists wrote in a prestigious journal, “As of the end of 2004, our analysis reveals little evidence of a housing bubble.”
Wrong. Actually the article was worse than wrong, because it was written explicitly to refute the signs of a bubble that had become obvious to many laypeople—which is kind of like the fire department showing up at a house with smoke wafting from the roof and declaring, “No, that’s not a fire,” only to have flames start leaping from the attic twenty minutes later. There was a bubble. And it can be explained best by incorporating psychology into economics, namely the tendency of individuals to believe that whatever is happening now is what’s most likely to happen in the future.”
Introduction
Naked Economics (rev. and updated ed., 2010)
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Charles Wheelan 6
American politician 1966Related quotes
Introduction, p. 13
Interest and Inflation Free Money (1995)
Roger E. Backhouse and Bradley W. Bateman, ch.1 "Keynes Returns, but Which Keynes?" Capitalist revolutionary : John Maynard Keynes (2011).

Coeditor's Forword in Inside the economist’s mind: conversations with eminent economists (2007)
New millennium

Source: The General Theory of Employment, Interest and Money (1936), Ch. 24 "Concluding Notes" p. 383-384
Context: The ideas of economists and political philosophers, both when they are right and when they are wrong, are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men, who believe themselves to be quite exempt from any intellectual influence, are usually the slaves of some defunct economist. Madmen in authority, who hear voices in the air, are distilling their frenzy from some academic scribbler of a few years back. I am sure that the power of vested interests is vastly exaggerated compared with the gradual encroachment of ideas. Not, indeed, immediately, but after a certain interval; for in the field of economic and political philosophy there are not many who are influenced by new theories after they are twenty-five or thirty years of age, so that the ideas which civil servants and politicians and even agitators apply to current events are not likely to be the newest. But, soon or late, it is ideas, not vested interests, which are dangerous for good or evil.

“One of the easiest ways to differentiate an economist from almost anyone else in society” http://andrewgelman.com/2011/07/19/one_of_the_easi/ (19 July 2011)
The Keynesian Revolution. Vol. 19. New York: Macmillan, 1947/66. p. 156.

As quoted in "Future tense" in The Guardian (14 September 2005)