A Common Core of European Private Law project volume, founded at the University of Trento.This book starts by surveying the use or neglect of good faith in European contract law and traces its historical origins. Its central part takes thirty hypothetical situations which have attracted the application of good faith and analyses them according to fifteen national legal systems. It concludes by explaining how European lawyers, whether from a civil or common law background, need to come to terms with the principle of good faith. First published volume of the Common Core of European Private Law project, founded at the University of Trento.This book starts by surveying the use or neglect of good faith in European contract law and traces its historical origins. Its central part takes thirty hypothetical situations which have attracted the application of good faith and analyses them according to fifteen national legal systems. It concludes by explaining how European lawyers, whether from a civil or common law background, need to come to terms with the principle of good faith. First published volume of the Common Core of European Private Law project, founded at the University of Trento.This book starts by surveying the use or neglect of good faith in European contract law and traces its historical origins. Its central part takes thirty hypothetical situations that have attracted the application of good faith and analyzes them according to fifteen national legal systems. It concludes by explaining how European lawyers, whether from a civil or common law background, need to come to terms with the principle of good faith.Part I. Setting the Scene: 1. Good faith in European contract law: surveying the legal landscape Simon Whittaker and Reinhard Zimmermann; 2. Bona fides in roman contract law Martin Josef Schermaier; 3. Good faith in contract law in the medieval IUS commune James Gordley; 4. The conceptualization of good faith in American contract law: a general account Robertl.