This book collects a large number of essays written in honour of Professor Ernst-Ulrich Petersmann by his friends, colleagues and former students. The respective contributions cover the fields of international economic law, international constitutional law/transnational constitutionalism, EU law and human rights. The broad thematic scope of this book mirrors the extremely large field of interests of the jubilarian. Paying tribute to a particular trait of Professor Petersmann´s character who was always both a dogmatic thinker and a curious researcher, the authors try to cover both structural issues of law as well as most recent developments, in particular in the field of international economic law. “Construing” the constitution of international economic law, in both senses of this activity, was an aim throughout Professor Petersmann´s academic career and this goal stands also at the heart of this book.