"When Yahweh became a man, he was a homeless vagrant. He walked through Palestine proclaiming that a mysterious kingdom had arrived...He called people to follow him, and that meant walking." -- Charles Foster Humans are built to wander. History is crisscrossed by their tracks. Sometimes there are obvious reasons for it: to get better food for themselves or their animals; to escape weather, wars, or plague. But sometimes they go--at great expense and...