Mark Doty said this quote

“ In the museums we used to visit on family vacations when I was a kid, I used to love those rooms which displayed collections of minerals in a kind of closet or chamber which would, at the push of a button, darken. Then ultraviolet lights would begin to glow and the minerals would seem to come alive, new colors, new possibilities, and architectures revealed. Plain stones became fantastic, “futuristic…” Of course there wasn’t any black light in the center of the earth, in the caves where they were quarried; how strange that these stones should have to be brought here, bathed with this unnatural light in order for their transcendent characters to emerge. Irradiation revealed a secret aspect of the world.Imagine illness as this light; demanding, torturous, punitive, it nonetheless reveals more of what things are. A certain glow of being appears. I think this is what is meant when we speculate that death is what makes love possible. ”