Mr Kaczynski warmly endorsed Poland's EU membership. But he said integration should not go too far and indicated that his accord is based on trust that the EU will take in more former Communist states in the future.
"Without any complexes, without fears we have opted for further integration with the European Union, because we feel good, we feel confident inside this fellowship," he said. "The union is a collection of sovereign states and will remain so. But co-operation will become ever more close."
"The union as an exceptionally successful experiment cannot be closed to others who want to join it. Not just Balkan countries, but also Ukraine, Georgia, in the future, others. The union can't say No to them," he added, in his final words before putting pen to paper