On Free Choice of the WillAugustine

On Free Choice of the Will (De Libero Arbitrio) is an early dialogue, begun around 387 and completed nearly a decade later. Augustine wrote it to answer a question that had driven him to Manichaeism and then away from it: if God is good, where does evil come from?

The answer unfolds across three books. Book I establishes that evil action arises from the will's turning away from the eternal and toward the temporal. Evil is not a substance or a force; it is a deficiency, a misdirection of desire. Book II offers a proof of God's existence by ascending through the levels of being (existence, life, understanding) to an eternal truth above the human mind, and argues that free will is itself a good, since without it no one could live rightly. Book III confronts the hardest objection: if God foreknows everything, are human choices truly free? Augustine insists that foreknowledge does not impose necessity. God knows what we will choose, but the choosing remains ours.

The work stands at the junction of several larger arguments. Against the Manichees, it denies that evil is a positive cosmic principle. Against the fatalists, it preserves genuine freedom. Against those who would blame God for evil, it places responsibility squarely on the creature's will. Pelagius would later cite this dialogue in support of his own views on human capacity; Augustine would spend the rest of his life clarifying how free will depends on grace.