Book of the Two Principles (Liber de duobus principiis)
c. 1230–1250 · Latin
Groups: Cathars (Albigensians)
An abridgement of a treatise by the absolute-dualist John of Lugio's circle. It is the only Cathar theological treatise to survive.
Where the manuscripts are now
Biblioteca Nazionale Centrale, Florence, Italy
Conventi soppressi J.II.44
Sources
No open translation is linked. The status note says how the text is known.