This book contains a range of essays on topics in the emerging field of "constitutional political economy". This field of enquiry is strongly associated with the name of James M. Buchanan whose research program has been the point of departure for this field. The essays are a selection of those written by colleagues and researchers in the field to honor Buchanan on the occasion of his 80th birthday. They cover a wide range of topics but fall primarily into two sets: one set dealing with methodological aspects of the c.p.e. approach; the other dealing with specific applications in a variety of policy areas, ranging from "economic transformation" to monetary policy regimes to health care. One particular issue in the methodological area relates to the model of motivation used - and more especially, the role of "morality" in economic and political behavior. The five essays on this topic make up one of the sections of the book, and justify reference to the issue in the volume's title.