Habermas wrote: "The unconditional opening of the Federal Republic to the political culture of the West is the greatest intellectual achievement of our postwar period; my generation should be especially proud of this. This event cannot and should not be stabilized by a kind of NATO philosophy colored with German nationalism. The opening of the Federal Republic has been achieved precisely by overcoming the ideology of Central Europe that our revisionists are trying to warm up for us with their geopolitical drumbeat about "the old geographically central position of the Germans in Europe" (Stürmer) and "the reconstruction of the destroyed European Center" (Hillgruber). The only patriotism that will not estrange us from the West is a constitutional patriotism."