"Pepé looked suspiciously back every minute or so, and his eyes sought the tops of the ridges ahead. Once, on a white barren spur, he saw a black figure for a moment; but he looked quickly away, for it was one of the dark watchers. No one knew who the watchers were, nor where they lived, but it was better to ignore them and never to show interest in them. They did not bother one who stayed on the trail and minded his own business." - John Steinbeck