The stone is alive with light, but only in the dark. When I turn on the lamp again, it goes back to being a small piece of gravel in my hand. Or my eyes go back to seeing it that way. When I entered the cave hoping for a glimpse of celestial brightness, it never occurred to me that it might be so small. But here it is, not much bigger than a mustard seed—everything I need to remember how much my set ideas get in my way.

