2 I therefore made haste to return there, as soon as I knew that he, whom I thought it right to avoid, was now gone, for I had not deserted the Church of Milan, entrusted to me by the judgment of God, but avoided the presence of him who had involved himself in sacrilege. I returned, therefore, about the Calends of August, and have resided here since that day. Here, too, O Augustus, your letter found me.
Source: Letters (New Advent)