 Hayek worked in the areas of philosophy of science, political philosophy, the free will problem, and epistemology. For all that, Hayek was more hedgehog than fox. His life’s work, for which he won a Nobel Prize in Economics in 1974, illuminated the nature and significance of spontaneous order. The concept seems simple, yet Hayek spent six decades refining his idea, evidently finding elusive the goal of being as clear about it as he aspired to be.