Perhaps the City of God is not so much a place in space, as a place in the heart.
You come to see that suffering is required; and you no more want to avoid it than you want to avoid putting your next foot on the ground when you are walking. In the spiritual path, joy and suffering follow one another like the two feet and you come to a point of not minding which 'foot' is on the ground. You realize on the contrary that it is extremely uncomfortable hopping all the time on the joy foot.
~ John G. Bennett in TEACHINGS FROM SHERBORNE