Multidisciplinary Economics: The Birth of a New Economics Faculty in the Netherlands -- Opening Address -- Historical Mistakes Rectified -- Tjalling C. Koopmans: An Inspiring Example -- Styles of Research in Economics at Cowles -- Multidisciplinary Economics at Utrecht University -- Origins and Development of Multidisciplinary Economics at Utrecht University -- Multidisciplinary Economic Research at Utrecht University -- Spanning Multidisciplinary Economics: The Institutional, Historical and Spatial Dimensions of Economics -- Towards a European Social Model -- Dutch Debates: Modernising Social Security by Introducing the Life Course as a Frame of Reference -- Learning to Trust -- The Truth About Markets -- The State of the Industrial Organization Field -- On the Dynamics of Innovation Policy: A Dutch Perspective -- ‘History Friendly’ Models of Industrial Evolution: An Overview -- Public Governance and Private Governance: Exchanging Ideas -- Macroeconomics of Fiscal Policy and Government Debt -- Joys and Pains of Public Debt -- European Integration and Economic Geography: Theory and Empirics in the Regional Convergence Debate -- An Account of Geographic Concentration Patterns in Europe -- Regulation and the Role of Central Banks in an Increasingly Integrated Financial World -- Who is Running the IMF: Crtical Shareholders or the Staff? -- Synthetic Money -- Health, Wealth, and the Role of Institutions -- Organisational Economics in an Age of Restructuring, or: How Corporate Strategies Can Harm Your Economy -- Does Social Security Crowd out Private Savings? -- Will the Dutch Level out Their One and Only Mountain? -- The Global Market for Capital: Friend or Foe -- From Koopmans to Krugman: International Economics and Geography.Multidisciplinary economics deliberately uses the insights and approaches of other disciplines and examines what consequences their contributions have for existing economic methods, theories and solutions to economic problems. Multidisciplinary economists should be at home in their own discipline and meet the high international standards of economic teaching and research that the discipline has developed. At the same time they should be able to recognise the limits of economics and be willing to open up new horizons by following new, discipline-transcending paths on which new insights into the analysis and solutions of economic problems can be found in collaboration with representatives of other disciplines. As a result of this search, economic methods and theories may have to be adjusted in such a way that they take insights from other disciplines into account. They may even have to be replaced by methods and theories that have been developed by other disciplines.