In the winter of 2002, Rory Stewart walked across Afghanistan. He arrived six weeks after the Taliban fell, and he dodged landmines, snow storms and rogue tribal chiefs along the way.

Stewart’s walk through Afghanistan was part of a larger trek that included 16 months of walking 20 to 25 miles a day across Iran, Pakistan, India and Nepal.

All of which makes him an expert on walking. But don’t take my word for it. Here’s a passage from The Places In Between:

I thought about evolutionary historians who argued that walking was a central part of what it meant to be human. Our two-legged motion was what first differentiated us from the apes. It freed our hands for tools and carried us on the long marches out of Africa. As a species, we colonized the world on foot. Most of human history was created through contacts conducted a walking pace….

And Stewart thought these thoughts — of course — while walking!