I. He informs the Empress that he has loyally recognized the Council ordered by her, and sent representatives with letters to it.
Leo, the bishop to Pulcheria Augusta.
Your clemency's religious care which you unceasingly bestow on the Catholic Faith, I recognize in everything, and give God thanks at seeing you take such interest in the universal Church, that I can confidently suggest what I think agreeable to justice and kindness, and so what thus far your pious zeal through the mercy of Christ has irreproachably accomplished, may the more speedily be brought to an issue which we shall be thankful for, O most noble Augusta. Your clemency's command, therefore, that a Synod should be held at Nicæa, and your gently expressed refusal of my request that it should be held in Italy, so that all the bishops in our parts might be summoned and assemble, if the state of affairs had permitted them, I have received in a spirit so far removed from scorn as to nominate two of my fellow bishops and fellow presbyters respectively to represent me, sending also to the venerable synod an appropriate missive from which the brotherhood therein assembled might learn the standard necessary to be maintained in their decision, lest any rashness should do detriment either to the rules of the Faith, or to the provisions of the canons, or to the remedies required by the spirit of loving kindness.
Source: Letters (New Advent)