AETIUS of Antioch Syrian, humbly born but of considerable intellectual ability, versed in the liberal arts and theology, from 355 365 Aetius was the key exponent of radical Arianism anomoianism.

He was initially active at Antioch, where the Eusebian bishop Leontius ordained him deacon; and he was friendly with the Caesar Gallus. Forced to leave the city due to popular protest, he was recalled there in 357 when Eudoxius succeeded Leontius.

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An able dialectician, he was said to have reduced Basil of Ancyra and Eustathius of Sebaste to silence in a public dispute; in the events of 358 360 he was repeatedly accused, however, and was solemnly condemned at the Council of Constantinople 360, when Constantius II wanted to strike at the leading radical Arians and homoiousians, favoring a more centrist tendency.

Recalled from exile at the time of Julian 362, who was especially cordial to him in memory of his brother Gallus, with his disciple Eunomius he again took up his preaching of anomoian doctrine, organizing a separate church in opposition to the moderate Arianism of Eudoxius and Euzoius; he himself was consecrated bishop. Socrates HE II, 35 knew various letters of Aetius to Constantius and others; Epiphanius Panar. 76, 11 tells us that he wrote 300 doctrinal dissertations and transcribes one of them, the Syntagmation, on God generated and ungenerated.

By the continual use of dialectical procedures, especially hypothetical syllogisms and dilemmas, Aetius maintains in this work that God, higher than any causality, is also above generation; and if ungenerated indicates his nature, a single divine nature could not be both ungenerated and generated. Thus the Son, since he is generated, cannot participate in the substance, and thus the divinity, of the Father. An anomoian formula of faith is attributed to Aetius and to Patricius of Nicaea, summarized in the Alexandrian Chronicon called Historia acephala 4,36-77: though its authenticity is uncertain, it reflects very well, both in terminology and contents, the essential characteristics of the anomoianism of Aetius and Eunomius.

CPG II, 3445-3451. Fragments of letters can be found in F.Diekamp – B.

Phanourgakis eds. Doctrina patrum de incarnatione verbi, ein griechisches Florilegium aus der wende des 7.und 8.Jahrhunderts, M¼nster 2 1981; A.

Martin – M.Albert eds. Histoire acphale et index syriaque des lettres festales d'Athanase d'Alexandrie, Paris 1985 SC 317,154,8ff. ; Athanasius, The Profession of Patricius and Aetius, R.P.C. Hanson ed. Dublin, 1989; Studi: BBLK I, 49-50; LTK 1, 187-188; TRE 3, 711- 713; Quasten II 309; G.

Bardy, L'hritage littraire d'Atius: RHE 24 1928 809-827; Simonetti 583; J.De Ghellink, Aristotelismus des Aetius: RHE 26 1930 5ff. ; L.R. Wickham, The Syntagmation of Aetius the Anomean: JTS NS 19 1968, 532-569; T.A.

Kopecek, A History of Neo-Arianism, Cambridge, MA 1979, vol. I; H.C. Brennecke, Studien zur Geschichte der Homer, T¼bingen 1988, passim; R.P.

Vaggione, Eunomius of Cyzicus and the Nicene Revolution, Oxford 2000, treats extensively of Aetius in the course of his study, analyzing in some detail the various periods in his life, as well as his relations with Luciano and Arius. He cites the Epistola ad Mazona, dubious fr. 2 Diekamp 311.10, 13-14 and claims that the statement attributed there to Aetius, according to which the Son would be the creator Qe, sei mo, non, is a falsification, and that the statement is rather a Nicene interpretation.

At pp. 283-284 Vaggione treats of the mentioned formula of faith, the so-called Expositio Patricii et Aetii: what survives of the text is summarized in the Alexandrian Chronicon called Historia acephala 4,36-77 SC 317,154,8. M.

Simonetti AETIUS of Constantinople 5th c.. Presbyter of the church of Constantinople 5th c., is probably the author of the Laudatio Iohannis Baptistae, a panegyric on John the Baptist that was proclaimed on the feast of the saint's birth. CPG 7908; BHG 861; M.

Sachot, Les homlies de Lonce, prªtre de Constantinople: RSR 51 1977 235; C.Datema – P.Allen, A Homily on John the Baptist Attributed to Aetius, Presbyter of Constantinople: AB 104 1986 383-402; Patrologia V, 134. Flavius Aetius holidaymapq


Aetius – DeviantArt holidaymapq


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