I held a conference in Harvard where Americans said they didn't believe in risk. They thought it was just European hysteria. Then the terrorist attacks happened and there was a complete conversion. Suddenly terrorism was the central risk.

And therefore we must seek dialogue in this networked world. We must ask which voice was actually attempting to make itself heard and saw no other possibility of gaining a hearing. To that extent, for a while this also represented a forced opening of a cosmopolitan view.

Initially, the horrific images of September 11th triggered an enormous wave of solidarity.

In the final analysis, terror is also another proof of the fact that the superpower is not really a superpower. It was vulnerable.

You cannot make peace with terrorists. The normal dividing lines between war and peace do not apply.

And it also became clear that these conditions of inequality and historical injustice have given rise to a feeling of hate in the world - a deeply felt hate that cannot easily be overcome with a few good words.

Europe itself is an embodiment of this diversity.