In this interview excerpt, Joseph Weyland, Permanent Representative to the European Communities from 1984 to 1991 and Chairman of the Group of Personal Representatives of the Foreign Ministers of the European Communities from 1 January to 30 June 1991, shares his memories of the negotiations that led to the Treaty of Maastricht under the Luxembourg Presidency of the Council of the European Union from January to June 1991. He describes the work and the working method of the Group of Personal Representatives, emphasising the assistance of the General Secretariat of the Council of the European Communities and particularly its Legal Service. Finally, he discusses the European Commission’s proposals and the differences of opinion between the Commission and the Luxembourg Presidency.