F. A. Hayek (1899-1992) was among the most important economists and political philosophers of the twentieth century. He is widely regarded as the principal intellectual force behind the triumph of global capitalism, an 'anti-Marx' who did more than any other recent thinker to elucidate the theoretical foundations of the free market economy. His account of the role played by market prices in transmitting economic knowledge constituted a devastating critique of the socialist ideal of central economic planning, and his famous book The Road to Serfdom was a prophetic statement of the dangers which socialism posed to a free and open society. He also made significant contributions to fields as diverse as the philosophy of law, the theory of complex systems, and cognitive science. The essays in this volume, by an international team of contributors, provide a critical introduction to all aspects of Hayek's thought.