The fall of Jerusalem was the price paid by the Muslims for the continued civil wars brought on by competing Sunni and Shi’a visions of Islamic history. The Crusades, declared in 996, were an intercontinental invasion across a front line extending more than 3,000 miles from Spain to Palestine. At the time, the house of Islam was divided into three households. The Turks championed the...

There are brief moments in history when nature lifts its veil to the human intellect so that it may witness the majesty of divine creation and pass on the wisdom gained from this encounter to succeeding generations. One such intellect was that of Al Kindi. Abu Yusuf Yaqub Ibn Ishaq al-Kindi, one of the most celebrated of the philosophers and natural scientists of the classical age of Islam,...