A large section of European opinion believes that Muslims present a long term political and cultural threat. Professor Parekh argues that this view is deeply mistaken. There is, nevertheless, a small underclass, mainly young, which is deeply alienated from both their parental and European cultures. They are in Europe but not of it, and have no commitment to it. A dialogue between the Muslim communities in general and the host societies is therefore necessary. It has its limits and we should not expect too much from it. However, there is no alternative to it.