An Exhortation to Unanimity
Let therefore both the unguarded question and the inconsiderate answer receive your mutual forgiveness. For the cause of your difference has not been any of the leading doctrines or precepts of the Divine law, nor has any new heresy respecting the worship of God arisen among you. You are in truth of one and the same judgment: you may therefore well join in communion and fellowship.
Source: Life of Constantine (New Advent)