In which Augustine proves that it is to no purpose
that the Donatists bring forward the authority of
Cyprian, bishop and martyr, since it is really more
opposed to them than to the Catholics. For that he
held that the view of his predecessor Agrippinus, on
the subject of baptizing heretics in the Catholic
Church when they join its communion, should only be
received on condition that peace should be maintained
with those who entertained the opposite view, and that
the unity of the Church should never be broken by any
kind of schism, 31