I have my whole office set-up at waist level; I don't sit at all during the day. Sitting, to me, is the devil.

The only one who can tell you "You can't" is you. And you don't have to listen.-Nike

If someone had said to me before I started doing this that a human being is capable of running 100 miles nonstop, I would have just said: 'No way. I mean, how?' If you just go out there and run 100 miles, it breaks down a lot of barriers in terms of self-imposed limitations.

Somewhere along the line we seem to have confused comfort with happiness.

I'm not trying to take more of the pie for myself. I'm trying to make the pie larger for everyone.

I went to college, grad school. I got an M.B.A., had a really cush corporate job. But I was just bored stiff. I didn't fit that mold.

Any goal worth achieving involves an element of risk.