" What a world it is, Cora thought, that makes a living prison into your only haven. Was she out of bondage or in its web: how to describe the status of a runaway? Freedom was a thing that shifted as you looked at it, the way a forest is dense with trees up close but from outside, from the empty meadow, you see its true limits. Being free had nothing to do with chains or how much space you had. On the plantation, she was not free, but she moved unrestricted on its acres, tasting the air and tracing the summer stars. The place was big in its smallness. Here, she was free of her master but slunk around a warren so tiny she couldn't stand. "

― Colson Whitehead , The Underground Railroad