Why did his interest in the concept of spontaneous order and the history of the doctrine of unintended social consequences undergo very little develo… - Mark Blaug

The Lange idea of managers following marginal cost-pricing rules because they are instructed to do so, while the central planning board continually alters the prices of both producer and consumer goods so as to reduce their excess demands to zero, is so administratively naive as to be positively laughable. Only those drunk on perfectly competitive, static equilibrium theory could have swallowed such nonsense. ... in all the recent calls for reform of Soviet bloc economies, no one has ever suggested that Lange was of any relevance whatsoever. And still more ironically, Lange’s “market socialism” is, on its own grounds, socialism without anything that can be called market transactions.

There were many Hayeks: Hayek, the political scientist; Hayek, the economist; Hayek, the philosopher of social science; Hayek, the psychologist. Even in these different roles, he played many parts.

The history of economic thought is irrepressible. It would survive even if it were banned … it would be carried on in secret in underground organizations. Many economists denigrate the history of economics as mere antiquarianism but, in fact, they have deluded ideas about the history of their own subject. After all, whenever anyone has a new idea in economics, whenever anyone hankers to start a new movement or school of thought, what is the first thing he or she does? Why, it is to rummage the attic of past ideas to establish an appropriate pedigree for the new departure. … Smith, Ricardo, Marx, Marshall and Keynes all drew on the history of economics to show that they had predecessors and forerunners; even Milton Friedman, when he launched the monetarist counterrevolution against Keynes, could not resist the temptation to quote David Hume over and again. The history of economic thought cannot be abolished and, were its study declared illegal, it would be studied in basements behind locked doors.