ABSTRACT
Deep Travel has some of the qualities of sunlight after rain-details stand out-but in other ways it more resembles moonlight, because it changes your sense of what has become possible and of what might happen next. As travel comes to be seen as a "whole- person event," so to speak, a continuum of actions and experiences with "interior travel" and "exterior travel" as its inseparable parts, we will see a similar reshaping of the now rather fuzzy concept of sustainability. The most striking difference between gliding into Deep Travel and crossing into the DMZ—if you were ever allowed to do so; it's the world's most heavily armed border—is that once you enter Deep Travel nothing "out there" that you can respond to has changed by even a molecule. People will know and expect travel to be fundamentally rewarding and nourishing, not just every now and then but almost invariably, the way eating, sleeping, and friendships are.
