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The Medieval Church · 1302
On Ecclesiastical Power
Giles of Rome · c. 1243–1316
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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
Public domain and free to read in full, though not held here. The archives below have it.
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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