Bateson (1978) " Number is Different from Quantity http://www.oikos.org/batesnumber.htm". In: CoEvolution Quarterly, Spring 1978, pp. 44-46
“I don't know what monetarism is. If monetarism just means a good old-fashioned quantity theory, of course it has not failed. If it means the particular version of Milton Friedman, I think it has because he imagines that he can achieve — ascertain — a clear quantity relationship between a measurable quantity of money and the price level. I don't think that is possible. In fact, just about 40 years ago in the opening sentences of my book, Prices and Production, I wrote that it would be a great misfortune if people ever cease to believe in the quantity theory of money. It would be even worse ever to believe it literally. And that's exactly what Milton Friedman does.”
"Interview with F. A. Hayek", in Cato Policy Report (February 1983)
1980s and later
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Friedrich Hayek 79
Austrian and British economist and Nobel Prize for Economic… 1899–1992Related quotes
Source: The Sociology of Secrecy and of Secret Societies (1906), p. 441: First lines of the article.

Exclusive Interview with F.A. Hayek by James U. Blanchard III, in Cato Policy Report (May/June 1984)
1980s and later

“The quantity of money, which is readily parted with to obtain a thing is called its price.”
Source: A Treatise On Political Economy (Fourth Edition) (1832), Book I, On Production, Chapter I, p. 61

Financial Times [UK] (7 June 2003)