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November 1, 2019

Friedrich Hayek and the Price System

Remarks by
Randal K. Quarles
Vice Chair for Supervision
Board of Governors of the Federal Reserve System
at
“The Road to Serfdom at 75: The Future of Classical Liberalism and the Free Market”
Ninth Annual Conference of the William F. Buckley, Jr., Program at Yale
New Haven, Connecticut

November 1, 2019

I am delighted to be back in New Haven and particularly to be in the company of
so many students interested in thinking rigorously about ideas. And I am honored to be
participating in the William F. Buckley, Jr., Program’s conference today on Friedrich
Hayek and the future of classical liberalism. 1
Over the course of this afternoon, you will hear a series of presentations that put
Hayek’s thinking in the context of contemporary developments and that offer a variety of
perspectives on his intellectual legacy. Hayek was a prolific—some might even say
profligate—thinker. He was at various times, and in various modes, an early
neuropsychologist, an epistemologist, a theoretical economist, a political philosopher, a
moral philosopher, a philosopher of science, a historian of ideas, a public intellectual, and
a social polemicist. This vast range has caused some to undervalue his contributions as
an economist, notwithstanding his eventual Nobel Prize—when Hayek moved to the
United States in 1950, the University of Chicago Economics Department would not hire
him because, as Milton Friedman said, “At that stage, he really wasn’t doing any
economics,” and Paul Krugman famously said that “the Hayek thing is almost entirely
about politics, not economics.” 2 Others believe his broader thought, while seminal, was
inconsistent across these various areas, and Hayek himself never demonstrated how it all
hung together. In my contribution to the discussion today, I want to examine a particular
example of the lasting effect that Hayek has had on economic thinking—one pertaining
to the importance of freely determined prices for producing efficient economic

1

All of my remarks today represent my own views, which do not necessarily represent those of the Federal
Reserve Board, the Federal Open Market Committee, or the Financial Stability Board. I would like to
thank Ed Nelson for his assistance in preparing these remarks.
2
See, respectively, Cassidy (2000) and Krugman (2011).

-2outcomes—and consider how Hayek’s insights in this area can, in fact, tie together the
various strands of his larger philosophy.
So as not to appear entirely out of touch with more immediate developments, I
will end by descending from the empyrean to the terrestrial with a discussion of the
economic outlook and the Federal Open Market Committee’s (FOMC) policy decision
from earlier this week.
Hayek and Economics
Hayek’s contributions to economics ranged widely, and many were important and
of lasting influence. Among them were his studies of the relationship between the
economic and political arrangements of a society. That body of work included, of course,
his celebrated book The Road to Serfdom, which was published 75 years ago this year
and is a focus of this event, as well as his later monograph, The Constitution of Liberty. 3
In addition, Hayek contributed prominently to monetary analysis. His work in this area
included the theory of the business cycle that was part of the thinking of the Austrian
school of economics. 4 It also included Hayek’s studies of the feasibility and implications
of private-sector currency issuance—contributions that have informed modern-day
analyses of the repercussions of electronic money. 5
Today, however, I will be concerned instead with still another key contribution
that Hayek made to economic analysis: understanding the operation of the price system.

3

See Hayek (1944, 1960). For an extensive analysis of these books, see Caldwell (2004) and, more
recently, Caldwell (forthcoming).
4
See, for example, Hayek (1935). For an examination of this body of work, see O’Driscoll (1977).
5
See especially Hayek (1976). For recent formal investigations of the topic, see Brunnermeier, James, and
Landau (2019) and Fernández-Villaverde and Sanches (2019). My Board colleague, Lael Brainard, has
recently discussed the policy implications of electronic money. See Brainard (2019). The potential
implications of privately issued currency in the form of stablecoins are under active consideration by the
Financial Stability Board, which I chair, in work to be delivered to the Group of Twenty later next year.

-3This contribution was formalized in his most famous paper in the economic-research
literature: his article “The Use of Knowledge in Society,” which was published in the
American Economic Review in September 1945. 6
Hayek (1945) Revisited
It is worth outlining the basis for the high esteem in which economists hold
Hayek’s 1945 contribution. In 1974, the press release by the Royal Swedish Academy of
Sciences that announced Hayek’s Nobel Prize in Economics stated: “The Academy is of
the opinion that von Hayek’s analysis of the functional efficiency of different economic
systems is one of his most significant contributions to economic research in the broader
sense. . . . His guiding principle when comparing various systems is to study how
efficiently all the knowledge and all the information dispersed among individuals and
enterprises [are] utilized. His conclusion is that only by far-reaching decentralization in a
market system with competition and free price-fixing is it possible to make full use of
knowledge and information.” 7
In the research that the academy described, Hayek’s 1945 paper was the key
article. More recently, this paper received further prominent acclaim when it was
categorized by an expert panel as being one of the top 20 articles ever published in the
American Economic Review. 8
With regard to the paper’s contribution to the understanding of economic
processes, an illuminating discussion was provided in 2005 by Oliver Williamson—
himself later a Nobel laureate in economics. Williamson cited Hayek’s 1945 paper,

6

See Hayek (1945).
See Royal Swedish Academy of Sciences (1974, paragraph 10).
8
See Arrow and others (2011, p. 4).
7

-4along with Adam Smith’s The Wealth of Nations from the eighteenth century, as forming
the core of a “venerated tradition in economics” of studying the notion of “spontaneous
order” arising from a freely operating market system. 9
How does Hayek’s case for the price system fit in alongside the other work that
Williamson mentioned? As Paul Samuelson—yet another Nobel Prize winner—had
occasion to note, the argument for the price system that Hayek articulated in 1945 was
complementary with, but distinct from, the argument that Adam Smith espoused in The
Wealth of Nations. 10 Smith focused on how market mechanisms guide producers toward
satisfying consumers’ wants. Hayek instead stressed how the market mechanism makes,
as he put it, “fuller use . . . of the existing knowledge” than a directed economy is able to
do. 11
Hayek emphasized that the signals transmitted by the various individual prices in
the economy could, together, serve as a useful means of guiding overall resource
allocation. The reason is that prices convey messages to consumers and producers even
when the information that drives prices is not aggregated or directly observed. 12 For
example, a large increase or decrease in the price of gasoline conveys information that
influences consumer behavior and that also affects the behavior of energy producers,
even when neither of these sets of market participants are aware of the precise factor
initiating the price change. As a related matter, Hayek recognized that prices transmit

9

See Williamson (2005, p. 1). This discussion referred to Smith (1776) and Arrow and Debreu (1954)
alongside Hayek (1945).
10
See Samuelson (1983, p. 6).
11
The quotation is from Hayek (1945, p. 521).
12
Hayek’s analysis therefore differed from general equilibrium approaches to economic problems,
exemplified by the work of Arrow and Debreu (1954). Such approaches tend to evaluate market outcomes
in terms of their ability to reproduce the allocation decided on by a hypothetical social planner who
possesses complete knowledge of all information in the economy and who is charged with maximizing the
welfare of the community.

-5information even in a situation in which much of that information is not explicitly
disclosed by one market participant to another, or even consciously articulable by any
market participant at all. Hayek believed that all of us “know” many things that we
cannot articulate but that we nevertheless act on in practical situations, and the price
system can therefore aggregate and transmit that knowledge which we could not
otherwise convey.
Hayek’s analysis had implications for the viability of different economic systems.
With regard to centrally planned economic systems—which had considerable support in
the West in 1945, in light of the increased use of government economic controls in many
countries during World War II and the dismal performance of market economies during
the Great Depression—Hayek’s analysis suggested that these systems would likely
exhibit great inefficiency. To Hayek, it was totally unrealistic to expect an economy to
operate efficiently if it was based on the “direction of the whole economic system
according to one unified plan,” as such a plan lacked the valuable information embedded
in market-determined prices. 13
The economist Gregory Mankiw has elegantly summed up Hayek’s insight here:
“Information is very, very dispersed among the population. . . .Nobody can possibly
know all the information you need to run a centrally planned economy.” 14 Hayek’s
economic analysis therefore complemented the philosophical and political arguments he
marshaled against centrally planned economies in The Road to Serfdom. Again, it is
important to recognize that this is not a contingent or technological problem. It is not
only that the dispersion of knowledge makes it hard to gather, although that is certainly

13
14

See Hayek (1945, p. 521).
See Mankiw (2017).

-6true—but if that were the only issue, then perhaps future advances in technology such as
quantum computing would remove that obstacle. Rather, as already mentioned, we all
know many important things that we cannot articulate; and many of these things we come
to know precisely through our participation in trade and exchange through the market.
This type of knowledge (a) is by its nature not conveyable to a central planner because
we are not fully aware of all we know, and (b) would not even exist apart from the social
interactions facilitated by the market which a central planner would replace.
The flip side of Hayek’s analysis was that, while there are insurmountable
obstacles to economic efficiency via a central plan, an efficient economy may still be
obtainable by letting the price system work. To quote Mankiw again, Hayek’s analysis
implies that “markets figure out a way to aggregate, in a decentralized way, dispersed
information into desirable outcomes.” 15 Furthermore, this mechanism does not require
the government or any one individual to process that dispersed information into a central
network or to be able to aggregate the information into a statistical series. It is, instead,
sufficient for the proper operation of the price mechanism that the relevant information
be embodied implicitly in the economy’s multiplicity of prices of individual goods and
factors of production. This information is recorded in such prices because they respond
to the behavior of individual buyers and sellers in the economy. 16 Consequently, as
longtime Hayek scholar Gerald O’Driscoll has observed: “What particularly
recommends the price system to Hayek is the ‘economy of knowledge’ with which it
operates. It is [in Hayek’s description] nothing short of a ‘marvel.’ ” 17

15

See Mankiw (2017). See also Taylor (2012, p. 1).
The process is interactive, with market participants not only influencing prices, but also responding to
price signals.
17
See O’Driscoll (1977, p. 27).
16

-7How Hayek (1945) Has Influenced Economics
Hayek’s 1945 paper has had a great influence on subsequent economic research.
It has been found to be highly relevant to a variety of areas of economic inquiry. For
example, Hayek’s analysis has proved valuable in the development of standard
microeconomics, since his contribution deepened economists’ understanding of the
working of the price system and promoted further investigation of the question of how
decentralized information is transmitted by markets. 18 Hayek’s emphasis on prices as
processors of information has also had applications to international trade theory. 19 And
in macroeconomics and monetary theory, Milton Friedman’s Nobel lecture, published in
1977, cited Hayek’s 1945 paper when arguing that, because it disrupted the signals
arising from relative-price movements, inflation both lowered the efficiency of the
economy and led output to deviate from its natural (or full-employment) level. 20 Hayek
likened the price mechanism to a “system of telecommunications,” and Friedman’s
description of inflation as a form of “static” interrupting price signals was in keeping with
this analogy. 21
Hayek’s ideas on prices influenced Joseph Stiglitz in his analysis of markets with
asymmetric information and Roger Myerson’s insights on mechanism design theory.
Each of these bodies of work earned a Nobel Prize. 22

18

See, for example, Serrano (2002).
For example, an article in the area of international trade noted (Bernhofen and Brown, 2004, p. 49):
“The insight that prices contain the relevant information about underlying economic fundamentals goes
back to the pioneering work of Hayek (1945).”
20
See Friedman (1977, pp. 456–67). The notion that distortions to relative-price patterns lead the
economy’s output level to deviate from its natural value would be formalized by Woodford (2003).
21
See Hayek (1945, p. 527), and, for Friedman’s use of the analogy between inflation and static, see
Friedman and Friedman (1980, pp. 17, 274).
22
Shortly before he received the prize, Stiglitz (2000, p. 1468) noted that the 1945 Hayek paper recognized
that “the central problem of economics was a problem of knowledge or information”—and so it anticipated
19

-8Qualifications and Extensions
I do not want to leave the impression, however, that all of the conclusions in
Hayek’s 1945 paper have become unchallenged principles chiseled into the economic
consensus. On the contrary, one of the reasons why the paper has been so influential is
that it remains a benchmark reference for understanding the case for relying primarily on
a market system, based on freely determined prices, for determining the production and
allocation of resources. The paper has therefore set a high bar for preempting the price
system or for other interventions in the market: When economists point to cases in which
market mechanisms can be improved on by regulation or other public-sector intervention,
or to instances in which price signals do not appear to be operating effectively, they need
to identify a specific market failure as the source of the inefficiency. Essentially, they
need to establish instances in which the price system can be improved on as a means of
processing information. 23
Even Hayek acknowledged that the price mechanism works within an ecosystem
of laws and social institutions, and those may evolve in ways that interfere with the
signaling of prices. For example, one of the important events that raised doubts about the
functioning of the private market’s pricing process occurred in the years leading up to the

the field of the economics of information. And in his Nobel lecture, Myerson (2008, p. 586) credited
Hayek’s “widely influential paper” with helping spur mechanism-design research—by characterizing
alternative institutional frameworks as different mechanisms for “communicating widely dispersed
information about the desires and the resources of different individuals in society.”
23
For example, while Stiglitz (2000) agreed that the price system is a means of collecting and transmitting
dispersed information, he took issue with the notion that this system always produced the most efficient
economic equilibrium. Specifically, Stiglitz argued that incomplete information could lead to
unnecessarily high unemployment and other undesirable outcomes that could be improved on by
government intervention. In a similar vein, Dasgupta (1980, p. 115) noted in response to Hayek’s (1945)
position: “It can immediately be argued that the fact that much information is private is not on its own
sufficient to warrant the unfettered play of market forces to be judged the best possible resource allocation
mechanism.”

-9financial crisis. This period featured pricing by financial markets that seemed, in some
prominent cases, not to be adequately reflecting information about actual risks. Spreads
on risky private-sector debt reached very low levels, and damaging spillovers to the
nonfinancial sector occurred in the form of unduly high real estate prices and excessive
leverage by borrowers in the housing market. One of my predecessors at the Federal
Reserve Board, Donald Kohn, has noted the seeming herd-like behavior of financial
markets in the pre-crisis period that generated this situation—an “underpricing of risk.” 24
The financial crisis, and the deep recession that followed it, prompted changes in
the United States’ regulatory framework. These changes have been designed to make the
financial system more resilient than it was before the crisis. By creating appropriate
incentives and rules, they should also encourage financial markets to price risk more
appropriately than they did in the years leading up to the crisis—for example, by
reducing the danger of investor complacency regarding the riskiness of their investments
and the possibility of adverse scenarios. If we follow Hayek and regard the price system
as like a telecommunications network, and then apply that metaphor to the financial
sector, we can think of the institutional and regulatory changes to the financial system
over the past decade as designed to improve the reliability and signal quality of the
transmissions. 25
How does all of this relate to the larger questions of philosophy and social order
to which Hayek devoted much of his thought? Hayek’s insights about the price system
depend importantly on his theory of knowledge: The information that is available to us
as a society is the aggregate of the highly dispersed and sometimes inarticulate

24
25

See Kohn (2009). See also Yellen (2017, p. 4).
I recently discussed post-crisis reform to financial regulation in Quarles (2019).

- 10 knowledge possessed by each of us individually. It is not only hard to convey that
information to a central authority for processing into a rational decision—it is also
conceptually impossible given the nature of that knowledge. And, indeed, important
parts of that knowledge will not even be generated except through our interaction with
each other through the mechanism of the market. Trying to centralize economic
decisionmaking, then, is not just too hard to do as a practical matter. It would actually
reduce the amount of knowledge available to us as a society, by replacing those myriad
individual interactions in a free marketplace. Thus, even if some technological way to
aggregate information other than through prices could be invented, it would lead to less
efficient, less humane outcomes because it would be based on less total human
information. The price mechanism, then, is not just a matter of economics—it is a matter
of social and, indeed, civilizational progress. As Hayek says in The Constitution of
Liberty, “[C]ivilization begins when the individual in pursuit of his ends can make use of
more knowledge than he himself acquired and when he can transcend the boundaries of
his ignorance by profiting from knowledge that he himself does not possess.” 26 I think
this ties together the various threads of Hayek’s thought throughout a long life: his early
work on psychology (“How do we know?”), his later epistemology (“What do we know,
and what does it mean to know it?”), his economics (“How do we make knowledge
usable?”), and his social and political theory (“What institutions will ensure that the
greatest amount of human knowledge will be usable in the pursuit of their human
fulfillment?”). Contrary to those polemicists across the ideological spectrum whose
tendentious simplifications of Hayek’s thought would turn him into a crude icon rather

26

See Hayek (1960, p. 22).

- 11 than a complex thinker, this is a deeply human, and a deeply humane, project. I will look
forward to the contributions of the others you will hear from today in how Hayek
elaborated it and how we can further these principles today.
Economic Outlook and Monetary Policy
Now I would like to turn to the current economic scene and this week’s FOMC
decision. Let me start by saying that the U.S. economy is doing well, and I am optimistic
about the outlook. Economic conditions are currently very close to meeting our—that is,
the FOMC’s—dual-mandate objectives of maximum sustainable employment and price
stability.
A particular source of strength has been the labor market. Setting aside the
monthly volatility and, specifically, the effects of the recent strike at General Motors,
labor market indicators are as strong as they have been in quite some time. The
unemployment rate has been running near a 50-year low, and the proportion of the
population currently employed is close to its highest level in a decade. Encouragingly,
labor force participation has held up, as the tight labor market has motivated workers to
either join or remain in the labor force, halting, at least for the time being, a long-standing
downward trend. Although the pace of job gains has slowed this year, we expected some
deceleration because of how low the unemployment rate has fallen.
A strong job market and high employment have in turn supported economic
growth. Personal consumption expenditures (PCE) grew 2-1/2 percent over the past four
quarters, a healthy pace by historical standards and a major contributor to overall growth
since consumption represents over two-thirds of economic activity. Because the labor

- 12 market remains tight, I expect wage growth to pick up, which would then in turn
underpin further strength in consumption and overall growth.
For the other half of our mandate, inflation as measured by the PCE index was 1.3
percent over the 12 months ending in September, while core PCE inflation, which
excludes increases in the prices of food and energy, was 1.7 percent. While these
readings are below our 2 percent inflation objective, they are fairly close, and my
assessment is that inflation will inch toward our objective in the coming months.
Outside the near term, I am also optimistic about the longer-term potential of the
U.S. economy. I am heartened by a recent pickup in labor productivity growth. A
notable development of the post-crisis period has been the abysmal pace of labor
productivity growth. After averaging about a 2-1/4 percent pace in the two decades
leading up to the crisis, labor productivity growth has been closer to 1 percent, on
average, since 2011. While there has been much speculation, it remains to be seen what
has driven this slowdown. Consequently, the slowdown could resolve unpredictably.
Although the quarterly data are volatile, I have been encouraged by a pickup in labor
productivity in the first half of this year, when it grew at a 3 percent annual rate. Further
out, I admit to being a bit of techno-enthusiast, and I see the potential for many emerging
technologies, including 5G communications, artificial intelligence and machine learning,
and 3-D printing, to further boost productivity growth in the coming years.
Having established my optimism, I will now circle back to some more worrying
signs in the recent data that suggest some headwinds are holding back growth. One
prominent factor weighing on a relatively robust domestic economy has been weak
growth among our trading partners. The International Monetary Fund projects that global

- 13 economic growth in 2019 will be the slowest since the financial crisis. Partly as a
consequence of weak foreign growth, U.S. exports have been flat over the past year.
Another weak spot has been investment. After a strong 2017 and start to 2018,
business fixed investment has tailed off this year and fallen outright in the second and
third quarters. I find the weakness of investment to be of particular concern because
increasing investment and the capital stock are important for raising the potential capacity
of the economy. It is likely that some of the weakness in capital spending is a result of
elevated uncertainty, for foreign growth generally but also specifically for trade
developments.
Against this backdrop, at our meeting earlier this week, we decided to lower our
target range for the federal funds rate for the third time this year. We took this action to
help keep the U.S. economy strong in the face of global developments and to provide
some insurance against ongoing risks. By lowering the federal funds rate this year, we
are supporting the continued expansion of the economy. Overall, with these policy
adjustments, I believe that the economy will remain in a good place, with the labor
market remaining strong and inflation staying close to our 2 percent objective. We see
the current stance of monetary policy as likely to remain appropriate as long as incoming
information about the economy continues to be broadly consistent with our outlook of
moderate economic growth, a strong labor market, and inflation near our symmetric
2 percent objective.

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