Duo Sunt is Pope Gelasius I's own letter to the Byzantine Emperor Anastasius, written in 494, articulating an early and influential doctrine of two distinct powers, priestly and royal, spiritual and temporal authority, governing Christian society. As the pope's own primary letter, it is the direct and authoritative source for this particular formulation as Gelasius himself stated it. Its limit is that it is the papal instrument itself rather than independent historical or theological analysis of how the doctrine was actually received, applied or contested across the medieval controversies over church and state that followed it, which a dedicated historical study addresses separately.
Facts
Assessment
Reliability Tier1
Duo Sunt is Pope Gelasius I's own primary letter, treated at the top tier as the direct and authoritative source for this particular formulation as Gelasius himself stated it. NotesPope Gelasius I's own letter Duo Sunt to the Emperor Anastasius articulating the doctrine of two powers, spiritual and temporal authority (494); the papal instrument itself, not independent theological or historical analysis.
Citation
AuthorPope Gelasius I
Publication Year494
Source Typeprimary-text
Claims Backed By This Source (13 claims)
This source backs 13 claims across the atlas. As facts: 11 well-attested. As cited relationships: 1 holds. Plus 1 entities citing it as a general reference with no single fact or relationship attached.
Disposition By Topic
- Sources, 6 claims: 6 well-attested.
- Doctrines, 5 claims: 3 well-attested, 1 holds, 1 general references.
- Articles, 2 claims: 2 well-attested.
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