第1ニカイア公会議
At the First Council of Nicaea, 325, he signed the Confession, but only after a long and desperate opposition in which he was said to "subscribe with hand only, not heart" according to ancient sources. It was a huge blow to the Arian party since it was surmised that the participants in the First Council of Nicaea were evenly split between non-Arians and Arians.