"The Truth Is A Cave In The Black Mountains" by Neil Gaiman is a short story from The Best Science Fiction and Fantasy of the Year, V.5.
It's been a while since I've read any Neil Gaiman. I really like his writing style, it's very readable, and that's something I will continuously mention that I value.
In this story, a dwarf goes on a journey to a cave where you can find gold. It is very mysterious and hidden, so he has to get a guide to take him there. However, the gold you find in the cave is said to take something away from whoever takes it.
Here is a quote that I found particularly philosophical:
"I am old now, or at least, I am no longer young, and everything I see reminds me of something else I've seen, such that I see nothing for the first time...It is the curse of age, that all things are reflections of other things."
I can relate to this sentiment. Some time ago, I started to feel this way, too. It's like deja vu, but on a deeper, fundamental level. If our minds didn't have the faculty of association, though, I wonder if it would change the shape of consciousness.
It is a thought-provoking, interesting, and clever short story.