" I put my hand on my chest and closed my eyes. I have a dinosaur heart, cold, massive, indestructible, a thick meaty red. And I have a glass heart, tiny and pink, that can be shattered. The glass heart belongs to Pollux. There was a ping. To my surprise, it had developed a minute crack, nearly invisible. But it was there, and it hurt. "

― Louise Erdrich , The Sentence