We are most grateful to the individual authors of the chapters of this book who have made our jobs easy by producing outstanding work and with whom it has been a pleasure to meet to discuss the intersection of soft law and the law of international investment. Books like this do not come together without a great deal of assistance. Jamin Horn at the University of California, Davis, provided excellent assistance with citations. Florian Dunkel at the University of Vienna was indispensable – he provided outstanding help at all stages of the project and we could not have completed the work without his diligence. As always we acknowledge our families for their assistance and their forbearance.