God is light, we are told, and Hell is outer darkness. But look at a desert mountain stripped bare by the sun, and you learn only geography. Watch darkness claim it, and for a moment you may grasp why God had to create Satan—or man to create both.

Under most conditions, the best roof for your bedroom is the sky. This commonsense arrangement saves weight, time, energy, and money.

It is always there, of course, when you come back from the green world. You have been living by sunrise and sunset, by wind and rain, surrounded by the ebb and flow of lives that respond only to such simple, rhythmic elements. But now the tone and tempo of the days switch. Instead of harmony, jangle.

Although the vast majority of walkers never even think of using a walking staff, I unhesitatingly include it among the foundations of the house that travels on my back.

I had better admit right away that walking can in the end become an addiction ... even in this final stage it remains a delectable madness, very good for sanity, and I recommend it with passion.

By walking naked you gain far more than coolness. You feel an unexpected sense of freedom from restraint. An uplifting and almost delirious sense of simplicity. In this new simplicity you soon find that you have become, in a new and surer sense, and integral part of the simple, complex world you are walking through. And then you are really walking.

God is light, we are told, and Hell is outer darkness. But look at a desert mountain stripped bare by the sun, and you learn only geography. Watch darkness claim it, and for a moment you may grasp why God had to create Satan—or man to create both.