Conversely, the power to do good can be absent while freedom remains, as in demons, the damned and fallen man
On the other hand, being able to do good and to do what is acceptable and pleasing to God is a perfection that a free agent can lack while the nature and essence of freedom stay intact.
Everyone agrees that freedom in acting has remained in the demons, the angels of darkness, and that it does not wholly perish in men whom God has given over to eternal damnation. Yet neither the devil nor the damned can do good or do anything God approves.
Indeed, even in this life man corrupted by sin and lacking God's grace cannot achieve anything truly good and pleasing to God. As our Lord says, "Without me you can do nothing" (John 15:5), and the Apostle agrees: "Not that we are sufficient to think anything of ourselves, as from ourselves; our sufficiency is from God" (2 Corinthians 3:5). And still a man who is hardened and plainly abandoned by God keeps his freedom in acting.
Latin
XXXIV. Et ex adverso posse bene agere, & operari quae Deo grata sint & placeant, perfectio quaedam est, quae potest abesse ab agente libero, salva manente libertatis natura atque essentia. Quippe omnium consensu libertas in agendo mansit in daemonibus & angelis tenebrarum, nec prorsus illa perit in hominibus aeternae damnationi a Deo addictis; & tamen nec Diabolus, nec homines damnati bene agere possunt & aliquid facere quod a Deo probetur. Imo neque in hac vita homo per peccatum corruptus, & gratia Dei destitutus, quicquam praestare valet quod revera sit bonum & Deo placens. Juxta illud Domini nostri, Sine me nihil potestis facere, & consentaneum Apostoli dictum, Non quod sufficientes simus cogitare aliquid a nobis, quasi ex nobis: sed sufficientia nostra ex Deo est. Et nihilominus homo induratus, & plane a Deo desertus suam in agendo libertatem retinet. Joan. 15. ver. 5. 2 Cor. 3. ver. 5.