For the Muslim, religion traditionally was not only universal but also central in the sense that it constituted the essential basis and focus of identity and loyalty. It was religion which distinguished those who belonged to the group and marked them off from those outside the group. A Muslim Iraqi would feel far closer bonds with a non-Iraqi Muslim than with a non-Muslim Iraqi. Muslims of different countries, speaking different languages, share the same memories of a common and sacred past, the same awareness of corporate identity, the same sense of a common predicament and destiny. It is not nation or country which, as in the West, forms the historic basis of identity, but the religio-political community, and the imported Western idea of ethnic and territorial nationhood remains, like secularism, alien and incompletely assimilated.
Bernard Lewis