284. Save for these points, and some few others, where St. Augustine appears obscure or even repellent, it seems as though one can conform to his system. He states that from the substance of God only a God can proceed, and that thus the creature is derived from nothingness (Augustine _De Lib. Arb._, lib. 1, c. 2). That is what makes the creature imperfect, faulty and corruptible (_De Genesi ad Lit._, c. 15, _Contra Epistolam Manichaei_, c. 36). Evil comes not from nature, but from evil will (Augustine, in the whole book _On the Nature of Good_). God can command nothing that would be impossible. 'Firmissime creditur Deum justum et bonum impossibilia non potuisse praecipere' (_Lib. de Nat. et Grat._, c. 43, p. 69). Nemo peccat in eo, quod caveri non potest (lib. 3, _De Lib. Arb._, c. 16, 17, _lib._ 1 _Retract._ c. 11, 13, 15). Under a just God, none can be unhappy who deserves not so to be, 'neque sub Deo justo miser esse [301] quisquam, nisi mereatur, potest' (lib. 1, c. 39). Free will cannot carry out God's commands without the aid of grace (_Ep. ad Hilar. Caesaraugustan._). We know that grace is not given according to deserts (Ep. 106, 107, 120). Man in the state of innocence had the aid necessary to enable him to do good if he wished; but the wish depended on free will, 'habebat adjutorium, per quod posset, et sine quo non vellet, sed non adjutorium quo vellet' (_Lib. de Corrept._, c. 11 et c. 10, 12). God let angels and men try what they could do by their free will, and after that what his grace and his justice could achieve (ibid., c. 10, 11, 12). Sin turned man away from God, to turn him towards creatures (lib. 1, qu. 2, _Ad Simplicium_). To take pleasure in sinning is the freedom of a slave (_Enchirid._, c. 103). 'Liberum arbitrium usque adeo in peccatore non periit, ut per illud peccent maxime omnes, qui cum delectatione peccant' (lib. 1, _Ad Bonifac._, c. 2, 3).