Thoreau writes in his journal:
Let us wander where we will, the universe is built round about us, and we are central still. By reason of this, if we look into the heavens, they are concave, and if we were to look into a gulf as bottomless, it would be concave also. The sky is curved downward to the earth in the horizon, because I stand in the plain. I draw down its skirts. The stars so low there seem loth to go away from me, but by a circuitous path to be remembering, and returning to me.
