Hayek never produced the book-length treatment of "the dynamics of capital" that he had promised in the Pure Theory of Capital. After 1941, he continued to publish works on the economics of information, political philosophy, the theory of law, and psychology, but seldom on macroeconomics. At the University of Chicago, Hayek was not part of the economics department and did not influence the rebirth of neoclassical theory which took place there (see Chicago school of economics). When, in 1974, he shared the Nobel Memorial Prize in Economics with Gunnar Myrdal, the latter complained about being paired with an "ideologue". Milton Friedman declared himself "an enormous admirer of Hayek, but not for his economics. I think Prices and Production is a very flawed book. I think his [Pure Theory of Capital] is unreadable. On the other hand, The Road to Serfdom is one of the great books of our time."
For what book of Hayek's did Friedman reserve his harshest criticism?
Pure Theory of Capital