The editors and contributors have formed this collection to honor Louis Henkin in his 80th year. He has contributed greatly to the fields of international and constitutional law, to teaching and scholarship, to the international community and to each of the contributors and editors personally. They wanted to acknowledge his outstanding work and they wanted to inspire the next generation of international lawyers by highlighting the impact of Henkin's contribution to international and constitutional scholarship. The editors believe the essays in this collection demonstrate tangibly what can be accomplished by a great and committed mind. The international community profits greatly from his commitment. As will be clear from the list of authors, the topics are dealt with in an outstanding manner, quality needs no praise.