Cap. VIII Arg. 6 Resp.: Augustine's just judgment refers to original demerit as adjunct, not motive
Second: when Augustine says that in reprobation, we ought to acknowledge God's just judgment, that refers not to foresighted actual sins of individuals, but to the common original debt. So it does not help those who derive this reprobation from foresight of final perseverance in actual sins. We do grant original sin a place in negative reprobation — as an adjunct adhering to the reprobate subject, not as a moving cause of the divine will to that act of reprobating. Negative reprobation, whereby special grace is decreed denied to a person stained by original sin alone, is exercised not without justice, still less against it. What justice does not owe is justly denied; yet the discrimination — some efficaciously freed from this common original guilt, some left in that state by denial of special grace — depends not on retributing and vindicating justice, but on the liberty of the divine will, which has mercy on whom it will and passes by whom it will.
Latin
Secundo, quando Augustinus affirmat, in reprobatione nos debere agnoscere justum Dei judicium, non id ad praevisa actualia peccata singulorum, sed ad commune debitum originale est referendum. Non igitur juvat eos qui hanc reprobationem a praevisione finalis perseverantiae in actualibus peccatis deducunt. Porro, originalis peccati considerationem in hac reprobatione negativa ita concedimus, ut fuerit adjunctum adhaerens subjecto reprobato, non autem ut fuerit causa movens voluntatem Divinam ad hunc actum reprobandi. Agnoscendum itaque est, hunc actum reprobationis negativae, qua gratia specialis neganda decernitur personae solo peccato originali contaminatae, non sine justitia, multo minus contra justitiam, exerceri. Nam (quod ante annotavimus) satis juste negatur quod ex justitia non debetur; sed interim tenendum, non ex retribuente et vindicante justitia, sed ex libertate Divinae voluntatis, cujus vult miserentis, et quem vult praetereuntis, dependere, quod in communi hoc reatu originalis peccati quidam decernantur efficaciter liberandi, quidam per negationem gratiae specialis in illo statu relinquendi.