Crises are never the best of times and the era of the Great Western Schism (1378-1417) easily qualifies as one of the worst of times. As a professor of canon law at the University of Padua and later cardinal, and as a major theorist in the conciliarist movement, Franciscus Zabarella (1360-1417) tried to do what a good legal mind does: find and explicate a viable and legal solution to the crises of his time, a solution that would stand up in his own era and for the generations that followed. In this volume Thomas Morrissey looks at what he said, wrote and did, and places him and his thought in...