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...

The Turks forced their way onto the world stage with thunderous momentum. Their galactic advance is marked by three critical events that provide historic benchmarks: the hiring of a Turkish guard by the Abbasid Caliph al Mu’tasim (833); the disappearance of the Samanid State based in Bukhara (999); and finally, the Battle of Manzikert (August 1072). After Caliph al Mu’tasim, the...

Civilizations collide when the transcendental values that govern them are used to define identity. During the Crusades, the Christian belief that God was immanent in the person of Jesus Christ collided with the Islamic vision that God is transcendent. For the Christian world all that was holy and venerable was embodied in the Cross of the Holy Sepulcher on which Jesus is believed to have been...

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,...