" The 17 essays in this volume discuss the theoretical foundations, dynamics, empirical status, and political economy of the natural rate hypothesis. They reflect the vigor with which we might expect both proponents and critics to discuss a concept of such central importance. Cross should be applauded for the breadth of his perspective on the natural rate. He has marshalled a wide variety of papers into a volume that is particularly good at highlighting recent advances and which, ultimately, no macroeconomist will want to be without." Mark Setterfield, Eastern Economic Journal