Concerning the Nature of Good, Against the Manichæans 6Nature Which Cannot Be Corrupted is the Highest Good; That Which Can, is Some Good.

Augustine · The Nicene and Post-Nicene Fathers Series I Volume IV: The Anti-Manichaean Writings, The Anti-Donatist Writings by Philip Schaff

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But if corruption take away all measure, all form, all order from corruptible things, no nature will remain. And consequently every nature which cannot be corrupted is the highest good, as is God. But every nature that can be corrupted is also itself some good; for corruption cannot injure it, except by taking away from or diminishing that which is good.