This book reflects the proceedings of the conference on the Institutional and Constitutional Dimensions of European Integration, asking the question - will the European union meet the challenges of the 21st-century? The conference was held on 6 and 7 November 1997 on the occasion of the 40th anniversary of the Europa Institute of Leiden University. The congress has resulted in a collection of contributions. Together they not only reflect the significance, the positive outcome, the deceptions and the unfulfilled expectations of the Treaty of Amsterdam, but they also constitute a stocktaking of the European Union as a whole.