If my own experience is at all typical, probably most students concerned with the influence of Islam in the modern world occasionally experience total doubt about their approach to the subject. Can one still justify putting such emphasis on the role of Islam as a historical continuum? Rather, since the nineteenth century, the period of the intensive ‘impact of the west’, haven't there been so many institutional changes that we have reached a real watershed, a breaking point with past history and with past categories of thought designed to explain that history? Shouldn't we de-emphasise Islam as a vital factor in the equation of the modern Arab world and of North Africa? Isn't it a mistake to put so much emphasis on the Islamic heritage?