Theodori presbyteri Rhaethensis Libellus adversus haereses quibus jam olim hypostatica duarum in Christo naturarum unio oppugnata est

Let him receive it with open hands and a whole heart, as the things said before indicate. But if someone thinks that because of this we confuse the divine oikonomia dispensation, as if "incarnate" could be understood in another way, let him take the discourse of piety with the addition, "fleshed with a soul endowed with mind and reason," and let him cease henceforth from seeking excuses for his sins. If anyone says, "The Word 'incarnate' can apply to one and a single nature, without introducing another nature to it," he seeks to signify some change or mutation of it, just as we say ice is the nature of water congelatam congealed. For behold, knowing the one nature of water, and adding to it "congealed," we have not introduced another nature by that expression, but have only understood a certain solidification occurring in it through the word "congealed." To this we respond, that in such effects there is no place for duplication. But this duplication makes a sign of another nature.

Latin: "Let him receive it, just as the preceding things demonstrate. But if anyone thinks on account of this that we confuse the divine economy, as if 'to be incarnate' could be understood otherwise, namely by that addition, 'Fleshed, with a soul endowed with mind and reason,' taken in a way other than the discourse of piety requires: let him cease henceforth from seeking what to use as a pretext for his sins. It is of this kind, what I wish to say. These voices, 'The Deity is incarnate' (someone will say), can belong to one and a singular nature, without it superinducing another nature upon it, so that it signifies a conversion or a certain mutation, just as we say ice is the nature of water congealed. For behold, when we recognize the one nature of water and add to it 'that it is congealed,' we by no means signify that another nature has been added to it, but by that word 'congealed' we understand a certain compaction made in it. To this, however, we respond that in such effects there is no place for doubling. But this doubling declares another nature."