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The Church Fathers · c. 388–390
On the Duties of the Clergy
De Officiis Ministrorum
Ambrose of Milan · c. 339–397
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What it is
Cicero's treatise on duty rewritten for Christian ministers, replacing the four cardinal virtues with a version answerable to scripture and to the poor.
Why it lasted
The first Christian handbook of professional ethics, and the model for clerical formation in the medieval West.
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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