Book excerpt: The division of the Church or Schism that took place between 1378 and 1417 had no precedent in Christianity. No conclave since the twelfth century had acted as had those in April and September 1378, electing two concurrent popes. This crisis was neither an issue of the authority claimed by the pope and the Holy Roman Emperor nor an issue of authority and liturgy. The Great Western Schism was unique because it forced upon Christianity a rethinking of the traditional medieval mental frame. It raised question of personality, authority, human fallibility, ecclesiastical jurisdiction and taxation, and in the end responsibility in holding power and authority. This collection presents the broadest range of experiences, center and periphery, clerical and lay, male and female, Christian and Muslim. Theology, including exegesis of Scripture, diplomacy, French literature, reform, art, and finance all receive attention.