Let me emphasize. I am an enormous admirer of Hayek, but not for his economics. That, again, is subject to misunderstanding. It depends on what you mean by economics. I’m not talking about his understanding of economics, his application of economics to the real world, or anything like that, but his contributions to the science of economics, not to economic practice, not to anything else. I think Prices and Production was a very flawed book. I think his capital theory book is unreadable. I cannot say I’ve read it. [laughter] It’s very unreadable.On the other hand, The Road to Serfdom is one of the great books of our time. His writings in [political theory] are magnificent, and I have nothing but great admiration for them. I really believe that he found his right vocation—his right specialization—with The Road to Serfdom. His earlier works were intended to be part of the literature of technical economics as a science, and, indeed, it was that characteristic of them that impressed Lionel Robbins and led Lionel to bring him from Austria to London.I never could understand why they were so impressed [at the London School of Economics] with the lectures that ended up as Prices and Production, and I still can’t.... these very confused notions of periods of production, different orders of products, and so on.
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Milton Friedman, in interview with Alan Ebenstein in 1995, published as Appendix 1, in Alan Ebenstein's Chicagonomics: The Evolution of Chicago Free Market Economics (2015)