Council and Hierarchy : Cambridge University Press : 9780521894081 : 0521894085 : 05 Sep 2002 : In 1311, at the council of Vienne, William Durant the Younger (c. 1266-1330), the French bishop and count, demanded that general councils ought to meet every ten years in order to place effective limits on the papal plenitude of power because 'what touches all must be approved by all'. This is the first systematic interpretation of William Durant's remarkable project to transfer supreme legislative authority from the papacy to general councils. It suggests that the conciliar theory has a more ambivalent complexion than is sometimes recognized. It confirms, on the one hand, that constitutional ideas were deeply embedded in the tradition of the church, which enabled Durant to anticipate the council of Constance by more than a hundred years. On the other hand, Durant attributed an authority to ancient law that overrode his republican ideas, sapped their vitality, and launched him on a pursuit o