" Likewise, no one speaks of celestial objects, though the skies are as crowded and busy here as anywhere else in the universe. This is largely because so much of the people’s attention is directed toward the ground, not the sky. They notice what’s there: stars and the sun and the occasional comet or falling star. They do not notice what’s missing. But then, how can they? Who misses what they have never, ever even imagined? That would not be human nature. How fortunate, then, that there are more people in this world than just humankind. "
― N.K. Jemisin , The Fifth Season (The Broken Earth, #1)