In many ways this is potentially an important book. Ramadan's argument that western Muslims should seek deeper integration in their host societies, and their possibility of doing so in keeping with (as he argues), the Islamic scriptural and juridical traditions, will be something that both Muslims and westerners would have sympathy for. Ramadan rejects all reactionary dualisms (ones that divide the Islamic universe into abodes of Islam and war); he also presents an attractive vision of Islam in relation to human nature and the richness of its own sources. Much of this is again quite convincing.
There are problems though. Reading a work of this nature probably has to be done with an awareness of the controversies that Ramadan has himself aroused. Not all he says has been taken at face value. More importantly, the book is an almost impossibly difficult read. Books are meant to communicate ideas and much of Ramadan's book falls short here. There is no good reason (that I can see) for the book to be expressed so periphrastically, using very long sentences with the many parenthesis and sub-clauses. If what he is saying is important, it needs to be more accessible. Many people will give up with it.