-- 70. Peter of Hippo Diarrhytus [1853] said: "Since there is one baptism in the Catholic Church, it is clear that a man cannot be baptized outside the Church; and therefore I give my judgment, that those who have been bathed in heresy or in schism ought71. There is one baptism in the Catholic Church, in such a sense that, when any have gone out from it, it does not become two in those who go out, but remains one and the same. What, therefore, is recognized in those who return, should also be recognized in those who received it from men who have separated themselves, since they did not lose it when they went apart into heresy.

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Footnotes:

[1853] Hippo Diarrhytus (Hippozaritus) was on the coast in ecclesiastical province of Zeugitana. For Petrus, cp. Cypr. Ep. 67.

[1854] Conc. Carth. sec. 72.