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Well, I will say this. And this is the main thing to remember. Macroeconomics — even with all of our computers and with all of our information — is not an exact science and is incapable of being an exact science. It can be better or it can be worse, but there isn't guaranteed predictability in these matters.
Paul Samuelson
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When I once called myself a Sunday painter dabbling in stochastic finance, that was not meant to belittle finance theory as a branch of serious economic theory. Such a peculiar view was expressed again and again by the late Milton Friedman, a dizzy view that I still find incomprehensible.
Paul Samuelson
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An evolving discipline–whether it be history or economics or astrophysics or immunology–is ever dynamically changing. Two steps forward and X steps back, so to speak. Periodically, the scholarly group registers more or less self-confidence, self-esteem, and complacency. We careerists are happiest when recent past achievements have seemed to be successful, but when still there are completable tasks dimly visible ahead.
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From the beginning I could not believe that the efficient market hypothesis was dependent on a pure Brownian motion white noise or any truly random random walk. Place a minuscule colloidal molecule on a horizontal table that covers unlimited acres. Bombard it from every direction with thousands of minute atoms; and then if you wait long enough that original molecule can have traveled a billion miles in one direction. That's truly a random Bachelier-Einstein walk, but not my notion of economic fluctuations.
Paul Samuelson
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I tell no secret when I repeat that fame and reputation are much a matter of luck and chance.
Paul Samuelson
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My notion of a fruitful economic science would be that it can help us explain and understand the course of actual economic history. A scholar who seriously addresses commentary on contemporary monthly and yearly events is, in this view, practicing the study of history—history in its most contemporary time phasing.
Paul Samuelson
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The failure of market catallactics in no way denies the following truth: given sufficient knowledge the optimal decisions can always be found by scanning over all the attainable states of the world and selecting the one which according to the postulated ethical welfare function is best. The solution 'exists'; the problem is how to 'find' it.
Paul Samuelson
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Markets are not perfect, which is true even for rationally regulated markets. Nevertheless, over the last thousand years every attempt to organize sizeable societies without important dependence on markets has generated its own failure...
Paul Samuelson
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After 1929 it was the sturdy middle classes, and not just the lumpen proletariat, who were down and out. It was not all that unfashionable or disreputable to be bankrupt. By the last Hoover years, the states and localities had run out of money for relief. In middle-class neighborhoods like mine, you constantly had children at the door, asking by mouth or with a note for a dime, a quarter, or a potato: saying, in a believable fashion, we are starving.
Paul Samuelson
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With the assistance of mathematics, I can see a property of the ninety-nine dimensional surfaces hidden from the naked eye. If an increase in the price of fertilizer alone always increases the amount the firm buys of caviar, from that fact alone I can predict the answer to the following experiment which I have never seen performed and upon which I have no observations: an increase in the price of caviar alone will increase the amount the firm buys of fertilizer. In thermodynamics such reciprocity or integrability conditions are known as Maxwell Conditions; in economics they are known as Hotelling conditions in honor of Harold Hotelling's 1932 work.
Paul Samuelson
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The consumer, so it is said, is the king…each is a voter who uses his money as votes to get the things done that he wants done.
Paul Samuelson
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Moral: To understand economics you need to know not only fundamentals but also its nuances. Darwin is in the nuances. When someone preaches Economics in one lesson, I advise: Go back for the second lesson.
Paul Samuelson
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A later writer, such as Leijonhufvud, I knew to have it wrong, when he later argued the merits of Keynes's subtle intuitions and downplayed the various (identical!) mathematical versions of The General Theory. The so-called 1937 Hicks or later Hicks–Hansen IS–LM diagram will do as an example for the debate.
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We economists love to quote Keynes's final lines in his 1936 General Theory—for the reason that they cater so well to our vanity and self-importance. But to admit the truth, madmen in authority can self generate their own frenzies without needing help from either defunct or avant-garde economists. What establishment economists brew up is as often what the Prince and the Public are already wanting to imbibe. We guys don't stay in the best club by proffering the views of some past academic crank or academic sage.
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Well, I'd say, and this is probably a change from what I would have said when I was younger: Have a very healthy respect for the study of economic history, because that's the raw material out of which any of your conjectures or testings will come. And I think the recent period has illustrated that. The governor of the Bank of England seems to have forgotten or not known that there was no bank insurance in England, so when Northern Rock got a run, he was surprised. Well, he shouldn't have been.
But history doesn't tell its own story. You've got to bring to it all the statistical testings that are possible. And we have a lot more information now than we used to.
Paul Samuelson
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I had a great admiration for Pigou. I thought that, in many ways, he was not only a faithful follower of Alfred Marshall, but he was also a more fertile developer of the Marshallian tradition than Marshall himself. … Whitehead said to me: Don't you think that Pigou was an overrated economist? Wasn't Foxwell a better man? Since I am an honest man, I said to Whitehead: No, I think Pigou was a much more important economist than Foxwell.
Paul Samuelson
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There is really nothing more pathetic than to have an economist or a retired engineer try to force analogies between the concepts of physics and the concepts of economics. How many dreary papers have I had to referee in which the author is looking for something that corresponds to entropy or to one or another form of energy. Nonsensical laws, such as the law of conservation of purchasing power, represent spurious social science imitations of the important physical law of the conservation of energy; and when an economist makes reference to a Heisenberg Principle of indeterminacy in the social world, at best this must be regarded as a figure of speech or a play on words, rather than a valid application of the relations of quantum mechanics.
Paul Samuelson
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Modigliani's theory was a powerful searchlight on what was happening... It is the best explanation of what has actually been happening in the great swing of American life since the 1950's.
Paul Samuelson
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Arrow's general impossibility theorem does not disprove the existence of the Bergsonian social welfare function, neither does it disprove the existence of the Benthamite hedonistic function.
Paul Samuelson
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Economics never was a dismal science. It should be a realistic science.
Paul Samuelson
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The general method involved may be very simply stated. In cases where the equilibrium values of our variables can be regarded as the solutions of an extremum (maximum or minimum) problem, it is often possible regardless of the number of variables involved to determine unambiguously the qualitative behavior of our solution values in respect to changes of parameters.
Paul Samuelson
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Paul Samuelson
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Born:
May 15, 1915
Died:
December 13, 2009
(aged 94)
Bio:
Paul Anthony Samuelson was an American economist, and the first American to win the Nobel Memorial Prize in Economic Sciences.
Known for:
Economics (1948)
Foundations of Economic Analysis (1947)
Linear Programming and Economic Analysis (1958)
Microeconomics (1997)
Most used words:
economics
economist
theory
science
history
public
market
general
finance
business
pigou
problem
existence
growth
investment
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