Those who are unprepared to demonstrate tolerance cannot expect or even demand tolerance for themselves.

Islam developed in opposition to orthodox Christianity from the very start, and it considers itself superior to Christianity. So far, it has only been tolerant in places where it is in the minority.

The fundamental issue, when it comes to Europe's future, will be whether and how we manage to transfer the ideals that once made Europe great - especially its Christian roots - into today's changed world. No one wants to return to the Middle Ages.

Those who are unprepared to demonstrate tolerance cannot expect or even demand tolerance for themselves.

Europe's experiment with multiculturalism, or the side-by-side existence of different cultures, has failed throughout the continent. Integration requires a minimum basis of shared values, that is, a culture of mutual tolerance and respect - in other words, what constitutes the heart of European culture.

A Europe that qualifies its own values is not attractive in the eyes of Muslims. Europe must conduct itself as a strong partner, both intellectually and spiritually, and it must be convinced of its own advantages. This is the only way we will gain respect.

Islam undoubtedly deserves respect. It has some things in common with Christianity, such as Abraham as a common progenitor, and the belief in only one God.