This chapter argues that Chapter Two of the Economic Consequences contains a much more important piece of economic analysis than is generally recognized, namely the Ramsey model of economic growth. It is well known that Keynes helped Ramsey to explain that model in the Economic Journal in 1928. But I show here that Keynes had himself given an exposition of the model, nearly a decade earlier, in this chapter. What is more, Keynes then generalizes this model in order to help him think about Europe’s growth process within the global economy, and why it was so fragile. I claim that the analysis in this chapter provides the underpinning for Keynes’s famous criticism of the reparations imposed on Germany. The chapter also makes clear that Keynes is starting to realize what he will need to do to get to the General Theory in 1936. And there are the beginnings of the ideas which would lead to the Bretton Woods conference in 1944 and to the rebuilding of the international monetary system after World War II. Understanding these connections helps us to visualize the arc of Keynes’s discovery, one which stretched all the way from 1919 until his death in 1946.

This concluding chapter naturally considers the long-term impact of the image of Keynes that has been suggested in the substantive chapters. It thus confirms the view that ‘Pragmatic Keynesianism’ had obvious traction in situations where practical expedients are sought in face of economic problems. But it also suggests that ‘Dogmatic Keynesianism’ has insights that can be applied (in a more theoretical sense) in understanding the workings of the economy, with reference to the rival theories of especially Schumpeter, Hayek and Friedman. The abiding concern that Keynes showed with the concepts of probability and uncertainty is highlighted; but also, in a methodological frame, the conclusion identifies intractable reasons why individual economic rationality cannot be relied upon to rescue us. Above all, this is a book that appeals to the historical record in offering us insights on the unique career path of a figure who was rather more than today’s conception of a professional economist.

This chapter and the next explore a tension between two different worlds in which Keynes moved – himself apparently equally at ease in either. One of these was Cambridge, where his idiosyncratic relationship with the Economics Faculty was by no means what we would expect of an academic economist today. Instead we find him relying upon networks of friendship, with some important links going back to his early days as a member of ‘the Apostles’ in Cambridge. The writing of his major economic works, The Treatise on Money (1930) and the General Theory (1936) was thus crucially influenced in a way that we would today regard as quite unprofessional.