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Saving and Investment in the Twenty-First Century

The Great Divergence

  • This book is open access, which means that you have free and unlimited access
  • Gives a wholly new perspective on macroeconomics
  • Dives into the economic fundamentals behind secular stagnation
  • Discusses economic policy consequences for various policy areas

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Table of contents (14 chapters)

  1. Front Matter

    Pages i-xxi
  2. Introduction: Private Wealth and Public Debt

    • Carl Christian von Weizsäcker, Hagen M. Krämer
    Pages 1-13Open Access
  3. Theory and Empirical Evidence

    1. Front Matter

      Pages 15-15
    2. The Natural Rate of Interest and the Optimal Rate of Interest in the Steady State

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 17-41Open Access
    3. Wealth and Desired Wealth

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 43-61Open Access
    4. Real Capital

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 63-103Open Access
    5. Land

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 105-136Open Access
    6. Public Debt

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 137-199Open Access
    7. Investment, Saving and Stagnation from a Keynesian Perspective

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 201-223Open Access
    8. Concluding Remarks on the Negative Natural Rate of Interest

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 225-245Open Access
  4. Economic Policy

    1. Front Matter

      Pages 247-247
    2. Monetary Stability and the Stability of the Open Society

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 249-259Open Access
    3. A New Era of International Economic Policy

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 261-274Open Access
    4. Europe, the Euro and German Demographic Renewal

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 275-291Open Access
    5. The Global Economy After the End of Capital Scarcity: A Utopian Proposal

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 293-308Open Access
    6. Concluding Remarks on Economic Policy

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 309-320Open Access
    7. Appendix: Two Faces of Public Debt

      • Carl Christian von Weizsäcker, Hagen M. Krämer
      Pages 321-326Open Access
  5. Back Matter

    Pages 327-343

About this book

The economy of the 21st century in the OECD countries and in China, is characterized by a new phenomenon: the structural surplus of private savings in relation to private investment. This is true even in a situation of prosperity and very low interest rates. On the one hand, this excess saving is due to people's increasing inclination to save in light of rising life expectancy, driven by the desire to have sufficient assets in old age. On the other hand, the demand for capital is not increasing to the same extent, so that investment is not keeping pace with the rising desire to save. The resulting gap between the private desire for wealth and private investment can only be closed by increasing public debt. 

This open access book offers a new, capital-theoretical perspective on the macroeconomic relationship between desired wealth and investment, and it presents new empirical data on private wealth and its composition in the OECD plus China area. The authors arguethat a free economic and social order can only be stabilized if the wealth aspirations of individuals are met under conditions of price stability. This is not possible without substantial net public debt. A new way of thinking about the economy as a whole is required. By way of an in-depth theoretical and empirical analysis, the book demonstrates this new way of thinking and describes the current challenges facing economic policy. It will appeal to economists and students of economics who are interested in macroeconomic theory and its economic policy implications.


An impressive, and convincing theoretical dive into the fundamentals behind secular stagnation, with very strong implications for actual debt policy. Public debt may be needed to improve welfare.
- Olivier Blanchard, Senior Fellow at the Peterson Institute for International Economics and Professor of Economics Emeritus at Massachusetts Institute of Technology (MIT). Chief Economist at the International Monetary Fund from 2008 to 2015.

Saving and Investment in the Twenty-First Century gives a wholly new perspective on macroeconomics. (...) Weiz­säcker and Krämer describe a simple, practical solution to the underemployment that has plagued Southern Europe for more than a decade.
George Akerlof, Nobel Laureate in Economics, 2001. Professor at the McCourt School of Public Policy at Georgetown University and Professor of Economics Emeritus at the University of California, Berkeley.

This is a profound and original contribution that can help us to understand and act on the great issues of our times.
- Nicholas Stern, Grantham Research Institute on Climate Change and the Environment at the London School of Economics. Author of the Stern Review Report on the Economics of Climate Change. Chief Economist at the World Bank from 2000 to 2003.


Reviews

“An impressive, and convincing theoretical dive into the fundamentals behind secular stagnation, with very strong implications for actual debt policy. Public debt may be needed to improve welfare.” (Olivier Blanchard, Senior Fellow at the Peterson Institute for International Economics and Professor of Economics Emeritus at Massachusetts Institute of Technology (MIT). Chief Economist at the International Monetary Fund from 2008 to 2015) 

“Saving and Investment in the Twenty-First Century gives a wholly new perspective on macroeconomics. With the low interest rates associated with the modern abundance of capital, constraints on fiscal policy can be greatly relaxed. As just one implication, Weiz­säcker and Krämer describe a simple, practical solution to the underemployment that has plagued Southern Europe for more than a decade. But that application of their New Macroeconomics is just the tip of an iceberg: of the penumbra of possibilities for a much better world.” (George Akerlof, Nobel Laureate in Economics, 2001. Professor at the McCourt School of Public Policy at Georgetown University and Professor of Economics Emeritus at the University of California, Berkeley) 

“We live in a world where there is abundant saving, and outstanding investment oppor­tu­ni­ties. Yet we have been unable to transform investment opportunities into invest­ment demand on a sufficient scale to match planned saving. The result has been very low, or nega­tive, real interest rates and ‘secular stagnation’. This remarkable book shows, using serious economic theory and careful empirical work, how this has come about. It also helps us see a way forward led by investment demand. We must invest strongly to overcome the immense risk of climate change, and to find new and much more attractive, resilient, and sustainable forms of growth and development. In doing so, the world as a whole can foster investment in developing countries, with potential high returns and great benefits to all. This is a profound and original contribution that can help us to understand and act on the great issues of our times.” (Nicholas Stern, Grantham Research Institute on Climate Change and the Environment at the London School of Economics. Author of the Stern Review Report on the Economics of Climate Change. Chief Economist at the World Bank from 2000 to 2003)

Authors and Affiliations

  • Max Planck Institute for Research on Collective Goods, Bonn, Germany

    Carl Christian von Weizsäcker

  • Karlsruhe University of Applied Sciences, Karlsruhe, Germany

    Hagen M. Krämer

About the authors

Carl Christian von Weizsäcker received his PhD in 1961 from the University of Basel for a dissertation in which he showed that the optimal rate of interest is equal to the growth rate. Edmund Phelps published the same result also in 1961 and called it the “Golden Rule of Accumulation.” Following research visits at MIT and the University of Cambridge, he became full professor of economics in Heidelberg at the age of 27. From 1968 to 1970, he taught as a full professor at the Economics Department of MIT. His students included Robert Merton, Robert Shiller and Stanley Fischer. During these years, he co-authored papers with Paul Samuelson and Robert Solow in the field of capital theory and macroeconomics. Later, Carl Christian von Weizsäcker turned to microeconomic topics: in particular, topics in industrial economics, the economics of telecommunications and energy economics. He developed a theory of adaptive preferences that can serve as a basis for welfare economics beyond thehomo economicus. He taught at the universities of Bielefeld, Bonn, Bern and Cologne. Since his retirement from teaching, he has been working at the Max Planck Institute for Research on Public Goods, Bonn (Germany).

In 1977, he was elected to the Board of Academic Advisors of the German Minister for Economic Affairs, of which he is still a member today. From 1986 to 1998, he was a member of Germany’s Monopolies Commission, and from 1989 to 1998, he was its chair. Since the outbreak of the financial crisis in 2008, he has principally focused on macroeconomics and capital theory. The present book developed out of his research in these areas.

Carl Christian von Weizsäcker is a Fellow of the Econometric Society, holds an honorary doctorate from the University of Freiburg, and is a member of the American Academy of Arts and Sciences, the North Rhine-Westphalian Academy of Sciences, and Germany’s National Academy of Science and Engineering. 

Hagen M. Krämer is Professor of Economics at the Department of Management Sciences and Engineering of the Karlsruhe University of Applied Sciences in Germany. He studied economics at the University of Bremen and the New School for Social Research (New York). After completing a first degree in economics, he worked for five years as a research assistant at the IKSF, an economics research institute at the University of Bremen, where he received his doctorate in 1995 for a dissertation on income distribution and technical progress. He then worked for six years as an economist at a leading German automotive company in Stuttgart and Berlin.

Hagen Krämer has been a visiting scholar or visiting professor at several institutes and universities, including The German Institute for Economic Research (DIW-Berlin), the Macroeconomic Policy Institute (IMK-Düsseldorf), the Fraunhofer Institute for Systems and Innovation Research (ISI-Karlsruhe), the University of Graz (Austria), and the NewSchool for Social Research (New York).

He is a founding member of the German Keynes Society, a member of the Council of the European Society for the History of Economic Thought, of the Scottish Economic Society and of the German Association for Political Economy. He serves as an elected member of both the Committee for the History of Economic Thought and the Committee for Economic Policy of the German Economic Association, the Verein für Socialpolitik. His preferred areas of research are income distribution, macro­economics, the economics of the service sector, and the history of economic thought.


Bibliographic Information

Buy it now

Buying options

Softcover Book USD 49.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book USD 59.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Other ways to access