Rome holds original righteousness supernatural in itself: unfallen nature could not by its own powers so know and love God, or so rule the body
They hold, then, that the gift of righteousness in the first man was supernatural not only by circumstance, because God gave it freely, directly and in a way beyond nature, but also in itself and by its kind, because the righteousness that adorned the first man neither flowed nor could flow from nature's principles, even uncorrupted nature.
Man, even before sin had infected him, could not by nature's own powers know and love God as fully as a righteousness and holiness that pleases God and is accepted by him requires for the reward of eternal life and blessedness.
Nor could nature's powers and gifts alone subject body to soul, and sense and appetite to reason, so perfectly that there was no rebellion of flesh against spirit in man, and that he felt no difficulty or resistance in doing good and no leaning toward doing evil. Yet that is how things stood in unfallen man, in whom there were no disordered movements of concupiscence rebelling against right reason.
Latin
VIII. Jam autem justitiae donum in primo homine volunt supernaturale fuisse, non tantum per accidens, quia nimirum fuerit gratis & immediate, & modo quodam naturam superante a Deo collatum: sed etiam per se, & ex suo genere quia justitia illa quae primum hominem ornabat nec fluxit, nec fluere potuit ex principiis naturae etiam non corruptae. Nec enim posse hominem, etiam nondum peccato infectum, propriis naturae viribus Deum & nosse & amare, quantum requirit justitia & sanctitas Deo grata & accepta, ad vitae & beatitudinis aeternae praemium. Neque etiam per solas vires & dona naturae posse corpus animae, sensumque & appetitum rationi ita perfecte subjici; ut nulla in homine existat carnis adversus spiritum rebellio, neque ullam in bene agendo difficultatem & repugnantiam, aut ad male agendum proclivitatem in se experiatur, sicuti res in homine integro se habebat, in quo scilicet nulli erant inordinati, & adversus rectam rationem rebelles concupiscentiae motus.