Now part of this conviction is rooted in my own experience. I'm a Christian, but my father came from a Kenyan family that includes generations of Muslims. As a boy, I spent several years in Indonesia and heard the call of the azaan at the break of dawn and at the fall of dusk. As a young man, I worked in Chicago communities where many found dignity and peace in their Muslim faith. As a student of history, I also know civilization's debt to Islam.