In the present book, Maulana Wahiduddin Khan explains that Islam claims to be an eternal religion. Any claim of this kind invites people to judge its validity on historical grounds. If latter day history testifies to its claim, it stands endorsed, otherwise it must be rejected. In this book, Maulana Wahiduddin Khan explains that Islam has stood the test of history. Even after a period of one thousand five hundred years, Islam has suffered no erosion of its validity. The well-known British historian, Edward Gibbon, describes the rise and expansion of Islam as “one of the most memorable revolutions which has impressed a new and lasting character on the nations of the globe.”