Interests and prices: Keynes in Wicksell's quantitative tradition

This paper presents Keynes's Treatise on Money as part of the tradition initiated by Wicksell's quantity theory. The specificity of Keynes's theory is that the traditional quantity theory is only verified at the point of monetary equilibrium. This equilibrium is defined as a particular situation where the expectations on price variations are perfectly verified. In disequilibrium, the traditional quantity theory should be rejected. This situation shows the role of "business deposits" in the relationship between the variation of the goods of prices and the variation of the prices of financial assets. Keynes's contribution is important in the macroeconomic theory because the new neo-classic synthesis of Woodford [2003] asserts a wicksellian heritage.