Nicene and Post-Nicene Fathers, Vol. V:
A Treatise on the Merits and Forgiveness...: Chapter 59

Chapter 59.—Whether the Soul is Propagated; On Obscure Points, Concerning Which the Scriptures Give Us No Assistance, We Must Be on Our Guard Against Forming Hasty Judgments and Opinions; The Scriptures are Clear Enough on Those Subjects Which are Necessary to Salvation.

Concerning the soul, indeed, the question arises, whether it, too, is propagated in the same way [as the flesh,] and bound by the same guilt, which is forgiven to it—for we cannot say that it is only the flesh of the infant, and not his soul also, which requires the help of a Saviour and Redeemer, or that the latter must not be included in that thanksgiving in the Psalms, where we read and repeat, “Bless the Lord, O my soul, and forget not all His benefits; who forgiveth all thine iniquities; who healeth all thy diseases; who redeemeth thy life from destruction.” 648 Or if it be not likewise propagated, we may ask, whether, by the very fact of its being mingled with and weighed down by the sinful flesh, it still has need of the remission of its own sin, and of a redemption of its own, God being judge, in the height of His foreknowledge, 649 what infants do not deserve 650 to be absolved from that guilt, even before they are born, or have in any instance ever done anything good or evil. The question also arises, how God (even if He does not create souls by natural propagation) can yet not be the Author of that very guilt, on account of which redemption by the sacrament is necessary to the infant’s soul. The subject is a wide and important one, 651 p. 68 and requires another treatise. The discussion, however, so far as I can judge, ought to be conducted with temper and moderation, so as to deserve the praise of cautious inquiry, rather than the censure of headstrong assertion. For whenever a question arises on an unusually obscure subject, on which no assistance can be rendered by clear and certain proofs of the Holy Scriptures, the presumption of man ought to restrain itself; nor should it attempt anything definite by leaning to either side. But if I must indeed be ignorant concerning any points of this sort, as to how they can be explained and proved, this much I should still believe, that from this very circumstance the Holy Scriptures would possess a most clear authority, whenever a point arose which no man could be ignorant of, without imperilling the salvation which has been promised him. You have now before you, [my dear Marcellinus,] this treatise, worked out to the best of my ability. I only wish that its value equalled its length; for its length I might probably be able to justify, only I should fear that, by adding the justification, I should stretch the prolixity beyond your endurance.

Footnotes

Ps. ciii. 2-4.

We follow the reading, per summam præscientiam.

Non mereantur.

He treats it in his Epistle, 166; in his work, De Animâ et ejus Origine; and in his De Libero Arbitrio, 42.