The Medieval Church · 1302
On Ecclesiastical Power
Giles of Rome · c. 1243–1316
What it is
An argument that all temporal authority and even all lawful property derive from the pope, so that a ruler outside the church holds nothing rightfully.
Why it lasted
The theoretical extreme of papal claims, and the source of much of the language of Unam Sanctam.
Where to read it
This work is in the public domain and can be read in full, free, at the archives below. The Library catalogues it; it does not host the text.
These open a search on each archive rather than a direct link, which is the honest way to point at an edition nobody here has checked line by line.
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