[T]he book’s contributors use layered, detailed and sophisticated historical perspectives to build a clear case for federalist solutions whenever possible to resolve tensions emerging from the intrinsic heterogeneity of the European project. As potential solutions to the EU’s current woes have to take the complex historical heritage showcased by Amato et al. into account, this book is very relevant for anyone who is interested in a systemic and insightful analysis of the legal, political and economic paths that have shaped the EU since its inception.