“I watch as long as I can and only then do I finally gain the courage to change seats, to give up my dark and troubled past and turn around to face an uncertain and terrifying future. And when I do so the breath catches in my throat at the immensity of earth that lies before us, the prairie unspeakable in its vast, lonely reaches. Dizzy and faint at the sight of it, I feel as if the air has been sucked from my lungs, as if I have fallen off the edge of the world, and am hurtling headlong through empty space. And perhaps I have … perhaps I am …”