He stated his beliefs in 95 theses that he nailed to the door of a church in Wittenberg, Germany, the town where he lived in 1517.
People seek answers from religious leaders as they grapple to make sense of horror.
As if by instinct, people of faith gathered in sanctuaries this week, seeking spiritual shelter and a place to make sense of unthinkable tragedy. In the wake of the terrorist attacks on New York and Washington, churches, synagogues, mosques and temples were filled this week. Regular midweek prayer services were jammed. Interfaith gatherings and impromptu vigils brought together strangers in a time of crisis. Ancient Mandingo harp is innovation in Masses Benedictine monks in Senegal adapt a secular instrument for use in their worship.