Book II. Chap. 50,
On the Following Treatise,
"De Gratia Christi, Et de Peccato Originali."
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"After the conviction and condemnation of the Pelagian heresy with its authors by the bishops of the Church of Rome,-first Innocent, and then Zosimus,-with the co-operation of letters of African councils, I wrote two books against them: one On the Grace of Christ , and the other On Original Sin. The work began with the following words: `How greatly we rejoice on account of your bodily, and, above all, because of your Spiritual welfare.'"