William of Ockham, Dialogus, Part 2; Part 3 Tract 1 - Part 2; Part 3, Tract 1

In his Dialogus William of Ockham (c. 1285 to 1347/8) turned from pure philosophy and theology to polemic, in the form of a dialogue between a student and a university master. In Parts 2 and 3, reproduced here, they debate the extent of the Pope's power within the church.