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The Reformation · lectures 1539
On the Law of War
De Iure Belli
Francisco de Vitoria · c. 1483–1546
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What it is
When war may be waged, by whom, and within what limits — including that difference of religion is no just cause and that the innocent may never be deliberately killed.
Why it lasted
The bridge between medieval just war theory and modern international law, cited by Grotius and by the founders of the United Nations charter tradition.
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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