For the flesh lusts against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that you cannot do the things that you would.
All Commentaries on Galatians 5:17 Go To Galatians 5
Augustine of Hippo
AD 430
The fact is that both are good: the spirit is good and the flesh too is good. And the whole person who consists of both, one ruling and one obeying, is indeed good but a changeable good. Yet these changing goods could not arise were it not for the immutable good, which is the source of every created good, whether small or great. But however small might be one particular good, it is nonetheless made by the one incomparably good. Yet however great, it is in no way comparable to the greatness of its Maker. But in this human nature, good as it is in origin and constitution, there is now war, because there is not yet salvation.