On a recent walk, I covered several miles a day over the course of a month. The longer I walked, the more I found it was harder to remember the day of the week or month. The time on my watch was no longer so important as the position of the sun or the temperature or the direction or strength of the wind. A taxi ride of twenty miles at the end of my hike revealed some of the other differences in my way of looking at what lay around me. As the car traveled quickly, covering ten to fifteen walking