Having completed our analysis of the Scots’ approach to the explanation of science, morality, law and government and the market, we now move on to examine the same topics in the writings of the theorists of the twentiethcentury classical liberal revival. As we move through our analysis we will see how this group of thinkers develop the key concepts that we identified as typifying the spontaneous order approach in the work of Smith and the Scots. The central figure in our discussion, and the foremost exponent of the idea in recent times, will be F.A. Hayek. And by examining his work, and that of his fellow liberals, we will further develop our composite model of the spontaneous order approach.