If Paul is famous for his contrast of flesh and spirit, he is also famous for the key words he uses that go with them both. He speaks of the works of the flesh, but the fruit of the Spirit. Compare artificial Christmas trees with ordinary but real fruit trees in an orchard. The Christmas trees look wonderful for a short while, but then they get packed away or thrown out. The fruit trees may not look so spectacular, but if they are properly cared for they will go on bearing fruit year after year. Which is more important?