Work dossier · summary and historical context
Ad Calosyrium is a letter by Cyril of Alexandria addressed to Calosyrius, likely a monk or cleric, defending orthodox Christology against Nestorianizing views. The work is part of Cyril's anti-Nestorian polemic, written in Greek during the 430s. It survives in a single manuscript tradition, with the earliest witness a 10th-century codex. The letter was included in some patristic florilegia used in Christological debates of the 5th–6th centuries. The present edition is a modern digital transcription without critical apparatus; for textual details, readers should consult the critical edition by P. E. Pusey (1877).
Ad Calosyrium is significant as a direct witness to Cyril's Christological arguments during the Nestorian controversy, showing his pastoral engagement with monastic communities. It also illustrates the use of scripture and logical argument in anti-Nestorian polemic. The letter's inclusion in later florilegia indicates its role in shaping orthodox Christology, though its limited manuscript survival highlights the fragility of such texts.
Cyril of Alexandria (c. 376–444) was a key figure in the Nestorian controversy, which centered on the nature of Christ and the title Theotokos (God-bearer) for the Virgin Mary. The letter to Calosyrius is dated to the 430s, during the height of this controversy, likely after the Council of Ephesus (431). Calosyrius may have been a monk or cleric in Egypt, possibly associated with the monastery of Calamon. The Greek text survives in a single manuscript tradition, with the earliest witness a 10th-century codex, indicating limited but continuous transmission. The letter was not cited in later ecumenical councils but was used in patristic florilegia, suggesting its value in later Christological debates. The present edition lacks a critical apparatus, so readers should consult Pusey's 1877 edition for textual variants.
Apparatus · what the pipeline recorded
| Coptic | Rendering | Count | First |
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| no glossary terms recorded | |||