"When I look back, it seems so have all begun, nearly thirty years ago, with an essay on “Economics and Knowledge” in which I examined what seemed to me some of the central difficulties of pure economic theory, Its main conclusion was that the task of economic theory was to explain how an overall order of economic activity was achieved which utilized a large amount of knowledge which was not concentrated in any one mind but existed only as the separate knowledge of different individuals. But it was still a long way from this to an adequate insight into the relations between the abstract rules which the individual follows in his actions and the abstract overall order which is [thereby] formed....It was only through a reexamination of the age-old concept of freedom under the law, the basic conception of traditional liberalism, and of the problems of the philosophy of the law which this raises, that I have reached a tolerably clear picture of the nature of the spontaneous order of which liberal economists have so long been talking."