Since the inflationary 1970s, theoretical work on monetary policy has concentrated almost exclusively on price-level stabilization and the avoidance of nominal shocks. In the aftermath of the collapse of financial bubbles in various parts of the world, the accomplishments and limitations of this dominant approach are debated in this volume edited by Axel Leijonhufvud, with contributions by a number of noted monetary economists, including Nobel Laureate Robert Lucas.