The articles in this volume were written in honour of F. A. Hayek and cover the whole scope of his thought. Many of the essays take as a starting point Hayek's own writings. The list of distinguished contributors include: Jacques Rueff, George Halm, Michael Polyani, Gordon Tullock, Gunter Schmolders, Friedrich Lutz, Gottfried von Haberler, Frank Paish, Ludwig Lachmann, Peter Bauer, James Buchanan, Fritz Machlup and Karl Popper.