This is not a new article, but it came up in a discussion of the need to design cities for people, not cars, and is worth a read. It basically reminds us of the need to walk for the sake of walking, not just as a means to go from A to B quickly. And apparently aimless walking is the key to literary genius, but wait till you finish walking before texting your agent.
"A lot of places, if you walk you feel you are doing something self-consciously. Walking becomes a radical act."