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...

Very few thinkers have influenced the history of West Africa as has the Algerian scholar Al Moghili who lived in the second half of the 15th century. Great ideas resonate through history much like the echo of drums between chains of mountains. Each reverberation provides fresh impetus for action. When ideas are implemented through great men and women, history is transformed and human...