permanent, earthly ache

"...our lifelong nostalgia, our longing to be reunited with something in the universe from which we now feel cut off, to be on the inside of some door which we have always seen from the outside, is no mere neurotic fancy, but the truest index of our real situation. And to be at last summoned inside would be both glory and honour beyond all our merits and also the healing of that old ache...At present we are on the outside of the world, the wrong side of the door." (p. 15)

-The Weight of Glory, C.S. Lewis