The development of Islam, its distinct ideas about the nature of the cosmos and the purpose of human existence, Muhammad's teachings, and the rich expressions of holiness that the faith encompasses, are explained in this concise introduction. As with all world religions, Islam is a product of history, during which it has interacted with other faiths and a variety of peoples. Doctrinal distinctions that exist within the Islamic community tend to reflect the Muslim world's wide range of ethnic and cultural backgrounds. In an era of extreme religious tensions and prejudices, it is more important than ever to see this major world religion in a balanced and well-informed manner.