Most people, if they have really learned to look into their own hearts, would know that they do want, and want acutely, something that cannot be had in this world. There are all sorts of things in this world that offer to give it to you, but they never quite keep their promise. The longings which arise in us when we first fall in love, or first think of some foreign country or first take up some subject that excites us, are longings that no marriage, no travel, no learning can really satisfy. I’m not now speaking of what would be ordinarily called successful marriages or vacations or learned careers, I’m speaking of the best possible ones. There is something we have grasped at in that first moment of longing, which just fades away in reality. I think everyone knows what I mean. The wife may be a good wife and the hotels and scenery may have been excellent and chemistry may be a very interesting job, but something has evaded us.
If I find in myself a desire which no experience in this world can satisfy, the most probable explanation is that I was made for another world.
–C. S. Lewis,