ABSTRACT
The title of this chapter refers to an expression by Axel Leijonhufvud that achieved considerable academic success, that of the ‘Wicksell connection’. Indeed, in what one would qualify as a canonical text (Leijonhuvfud 1981), he chose a history of macroeconomics that would not simply be that of Keynesianism. Leijonhufvud’s contribution is an attempt to clarify ‘the relationships between some of the major schools of modern macroeconomics by tracing the development of the theory of the natural interest rate mechanism’ (ibid.: 131), that is in fact what Robertson seems to have been the first to qualify as ‘loanable funds theory’.1 Leijonhufvud uses this classification instrument to draw up a typology of the various currents in macroeconomics.2
