I walked.

I walked along the footpath.

I've gained weight.

I walked to school.

I rode a unicycle today.

I rode my bicycle a lot today.

I walked underneath it for the first time.

I've walked a lot in the mountains in Iceland.

What do you think I've been doing?

I walked for two hours in the afternoon heat.

What do you think I've been doing?

What do you think I've been doing?

So I was walking around it.

I walked in to school.

I rode a unicycle today.

I've been thinking about something.

I rode my bicycle a lot today.

Yeah, I've been worrying about that too.

In the afternoon, I walked in the city.

I've been out running around all day.

I was so busy last week.

I walked 10 kilometers, putting one foot in front of the other.

I want to show you something I've been working on.

I want to show you something I've been working on.

I walked up to Ashland, Oregon, where they were offering an environmental studies degree.

These are some of the meals that I've been cooking at home.

I walked all the way up to Port Townsend, Washington, where I built a wooden boat, rode it across Puget Sound and walked across Washington to Idaho and down to Missoula, Montana.

I had been using the first line of the NASA mission statement, To understand and protect the home planet, to justify my talks.

And at nine years old, I walked around in the city of Sudbury selling license plate protectors door to door to houses.

I got on my bicycle, and I cycled around the island of Malé.

Since I walked very fast, I was in time for the last train.

And I walked 10 miles or so, all morning, to get there, to the medicine man.

Now during that time those 17 years I walked and I played the banjo and I painted and I wrote in my journal, and I tried to study the environment by reading books.

I walked the 10 kilometers back and it was the shortest walk I ever had.

And sure enough I've never been in one, but apparently they go all around the buses and the trucks and it's crazy and it's noisy and it's exciting.

So I ran out in the freezing cold, and I photographed every single person that I knew that I could get to in February of about two years ago.

Now I put my sister on my back burning and I walked 10 kilometers with her strapped on my back.

Went in, paid my ten pesos, walked up 10 women two guys, usually a good ratio.

I got on a sailboat and I sailed down to the Caribbean, and walked through all of the islands, and to Venezuela.

She always wears a headscarf, but I've walked alongside with her on a beach with her long hair flying in the breeze.

I'm a cancer doctor, and I walked out of my office and walked by the pharmacy in the hospital three or four years ago, and this was the cover of Fortune magazine sitting in the window of the pharmacy.

And I figured, It's all over now, and she looks up and she says, Well, she's still watching these guys go she says, I can't ride a bike, no, she says, I can't use a skateboard, and I've never used roller blades, she knew them by name she says, And it's been 50 years since I rode a bicycle.

So some of these things, I'd wander around the streets of Dakar asking people, What's the algorithm? What's the rule for making this?

I walked up along Hudson Street where Jane Jacobs had lived and written her great book that so influenced what I was writing in Emergence past the White Horse Tavern, that great old bar where Dylan Thomas drank himself to death, and the Bleecker Street playground was filled with kids.

I put my banjo on and I walked all the way to the East Coast, put my foot in the Atlantic Ocean it was seven years and one day it took me to walk across the United States.