This is the title of a research paper I have written with my colleague and leading monetarist, Professor Tim Congdon, and published by the Institute of International Monetary Research (IIMR). This is a brief summary extracted from the paper, which is fully available at http://www.mv-pt.org/research-papers:
The quantity of money matters in the design of a monetary policy regime, if that regime is to be stable or even viable on a long-term basis. The passage of events in the Eurozone since 1999 has shown, yet again, that excessive money growth leads to both immoderate asset price booms and unsustainably above-trend growth in demand and output, and that big falls in the rate of change in the quantity of money damage asset markets, undermine demand and output, and cause job losses and heavy unemployment. This is nothing new. The ECB did not sustain a consistent strategy towards money growth and banking regulation over its first decade and a half. The abandonment of the broad money reference value in 2003 was followed in short order by three years of unduly high monetary expansion and then, from late 2008, by a plunge in money growth to the lowest rates seen in European countries since the 1930s. The resulting macroeconomic turmoil was of the sort that would be expected by quantity theory- of-money analyses, including such analyses of the USA’s Great Depression as in Friedman and Schwartz’s Monetary History of the United States.
This paper argues, from the experience of the Eurozone after the introduction of the single currency in 1999, that maintaining steady growth of a broadly-defined measure of money is crucial to the achievement of stability in demand and output. The ECB did not sustain a consistent strategy towards money growth and banking regulation over its first decade and a half.
The chart below illustrates our point very well:
As ever, comments very welcome.
Juan Castañeda
the old lady of threadneedle street 
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