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The Church Fathers · c. 543
Against the Nestorians and Eutychians
Leontius of Byzantium · c. 485–c. 543
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What it is
A technical defence of Chalcedon arguing that Christ's humanity has no independent person of its own but subsists within the person of the Word.
Why it lasted
The concept that let Chalcedonian christology answer its critics, and the foundation of all later Byzantine christology.
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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