The Enchiridion 102
102 The Will of the Omnipotent God is Never Defeated, and is Never Evil PL 40, 279
But however strong may be the purposes either of angels or of men, whether of good or bad, whether these purposes fall in with the will of God or run counter to it, the will of the Omnipotent is never defeated; and His will never can be evil; because even when it inflicts evil it is just, and what is just is certainly not evil. The omnipotent God, then, whether in mercy He pitieth whom He will, or in judgment hardeneth whom He will, is never unjust in what He does, never does anything except of His own free-will, and never wills anything that He does not perform.
Voluntas Dei invicta semper, et nunquam mala, sive misereatur, sive obduret. Sed quantaelibet sint voluntates vel angelorum vel hominum, vel bonorum vel malorum, vel illud quod Deus vel aliud volentes quam Deus, omnipotentis voluntas semper invicta est: quae mala esse nunquam potest; quia etiam cum mala irrogat, justa est, et profecto quae justa est, mala non est. Deus igitur omnipotens sive per misericordiam cujus vult misereatur, sive per judicium quem vult obduret, nec inique aliquid facit, nec nisi volens quidquam facit, et omnia quaecumque vult, facit.