One of the most important functions of religion is to serve as a basis of identity. This collection of essays by Ali A. Mazrui, a distinguished scholar of Islam, discusses how Islam differentiates Muslims from non-Muslims and affects how Muslims view each other. In the light of the upheaval currently occurring in the Muslim world, this collection provides readers with valuable context for the challenges of modernity and multiculturalism faced by Muslims. In these essays, Mazrui deploys his formidable knowledge of theology, history, and Muslim societies to analyze the theological, historical, and political influences on Muslim identity. In his usual style of comparative analysis, Mazrui draws most frequently in these essays from examples in Africa, the Middle East, South Asia and Muslim communities in the West. These essays delve into the complexities of Muslim identity and stratification, and provide contributions to key debates on modern Islamic political ideology. These essays will be of interest to readers engaged with Islam, religion, culture, comparative politics and international relations.