Interview with Jacques Delors, President of the Commission of the European Communities from 1985 to 1995, conducted by the Centre Virtuel de la Connaissance sur l’Europe (CVCE) on 16 December 2009 at the Paris-based premises of the think tank ‘Notre Europe’, of which Jacques Delors is the founding director. The interview, conducted by Hervé Bribosia, Research Coordinator at the CVCE, particularly focuses on the following subjects: the think tank ‘Notre Europe’, the concept of a ‘federation of nation states’ and the Community method, the Treaty of Lisbon and the institutional reform of the European Union, the role of the national parliaments, the European Convention and the Treaty establishing a Constitution for Europe, the future of the procedure for the revision of the treaties, the spill-over effect, differentiated integration and reinforced cooperation, the EU’s borders and Turkey’s application for accession.