He is best known to history as an attendee present at the Council of Nicaea in 325. He was one of the Arian Bishops at that Council. He eventually signed the Nicean Creed with the other Arian supporters, Zopyrus of Barca, Eusebius of Nicomedia and Theognis of Nicaea. He was exiled with the other three Arian bishops.
He is also notable for confronting the anti-Christian emperor Julian the Apostate in 362 after going blind - in reply to Julian telling him: "Thy Galilean God will not heal thy sight." He replied: "I thank God for depriving me of the power of beholding thy face."
- Dictionary of Christian Biography and Literature to the End of the Sixth Century A.D., with an Account of the Principal Sects and Heresies..
- Gelzer, Patrum Nicaenorum nomina, 231.
- Lequien, Oriens Christ., II, 625: Gams, Series episcop., 462.
- Gams, Series episcop., 462.
- Mansi, Sacrorum conciliorum nova et amplissima collectio,op. cit., vol.IV, coll. 1221 e 1367.
- Edward Gibbon. The Decline and Fall of the Roman Empire, Chapter 21, (1776–88)
- Jonathan Kirsch, "God Against the Gods: The History of the War Between Monotheism and Polytheism", 2004.
- Charles Freeman, The Closing of the Western Mind: The Rise of Faith and the Fall of Reason, 2002.
- Socr. iii. 12; Soz. v. 4; Tillem. vii. 332