3 The 'Meletians' to be acknowledged, and all who renounce heresy, especially as to the Holy Spirit.
As many then as desire peace with us, and specially those who assemble in the Old [Church] and those again who are seceding from the Arians, call to yourselves, and receive them as parents their sons, and welcome them as tutors and guardians; and unite them to our beloved Paulinus and his people, without requiring more from them than to anathematise the Arian heresy and confess the faith confessed by the holy fathers at Nicæa, and to anathematise also those who say that the Holy Spirit is a Creature and separate from the Essence of Christ. For this is in truth a complete renunciation of the abominable heresy of the Arians, to refuse to divide the Holy Trinity, or to say that any part of it is a creature. For those who, while pretending to cite the faith confessed at Nicæa, venture to blaspheme the Holy Spirit, do nothing more than in words deny the Arian heresy while they retain it in thought. But let the impiety of Sabellius and of Paul of Samosata also be anathematised by all, and the madness of Valentinian and Basilides, and the folly of the Manichæans. For if this be done, all evil suspicion will be removed on all hands, and the faith of the Catholic Church alone be exhibited in purity.
Source: Tomus ad Antiochenos (New Advent)