Quick Facts
Flourished:
4th century
Flourished:
c.301 - c.400
Subjects Of Study:
Anomoean
Britannica AI Icon
Adding us as a Preferred Source tells Google you trust our content, so our articles show up more often in your Google Search, Discover feed, and AI Overviews.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

Aƫtius (flourished 4th century) was a Syrian bishop and heretic who, during the theological controversies over the Christian Trinity, founded the extreme Arian sect of the Anomoeans (q.v.). His name became a byword for radical heresy.

Originating probably near Antioch, Aƫtius studied there under Arian masters while supporting himself as a goldsmith and a physician, rendering gratuitous service to the poor. As a student he wandered from one Syrian school to another and cultivated an acute facility in Aristotelian dialectical argument. Identifying theology with formal logic, Aƫtius methodically provoked his disputants and then reduced them to silence with extremely stringent and subtle arguments. A contemporary Syrian theologian, Epiphanius, records that Aƫtius expounded his doctrine in 300 close-knit syllogisms, 47 of which still exist.

Ordained a deacon at Antioch to teach Christian doctrine, AĆ«tius is said to have scandalized the faithful with his contention that from the aspect of divinity the Son was a totally different substance from the Father and was created from nothing. For this offense he was excommunicated. He then sought refuge with fellow Arians in Alexandria, Egypt, where he trained a disciple, Eunomius, also a bishop. Recalled to Antioch by the sympathetic Arian bishop Eudoxius, AĆ«tius nevertheless alienated the general membership of Arians by his extreme views and was condemned by some of his own heterodox colleagues at the church Council of Seleucia, near Antioch, in 359. The Arianizing Roman emperor Constantius II (337–361) thereupon exiled him to the wilderness of northeast Asia Minor. In 361 AĆ«tius was made a bishop by the emperor Julian the Apostate but never exercised territorial jurisdiction; he died in Constantinople c. 366.

Discover the fascinating events that shaped the world, straight from our editors.
By clicking ā€œSign Upā€, you consent to the Britannica Privacy Policy and Terms of Use.
Holy week. Easter. Valladolid. Procession of Nazarenos carry a cross during the Semana Santa (Holy week before Easter) in Valladolid, Spain. Good Friday
Britannica Quiz
Christianity Quiz
This article was most recently revised and updated by Encyclopaedia Britannica.