The idea that maybe you don't have to own a car if you only need one occasionally may catch on, just like time-sharing caught on in real estate

I was not an outstanding student. I did a reasonable amount of work. I got generally good - pretty good grades, but I was not that passionate about getting straight A's.

It's actually a relatively small number of people that really are those risk takers, and a relatively small number of people that end up really having an impact on the world, and it doesn't take a lot of people. We said, 'Well, rather than just sit by and wait, or fold our tent and go do something else, let's keep at it. Maybe we can be the ones who can figure this out,' and eventually we were.

There are no road signs to help navigate. And, in fact, no one has yet determined which side of the road we're supposed to be on.

It's stunning to me what kind of an impact even one person can have

I do think that people have an obligation to give back but that doesn't necessarily mean that you give back just the traditional way. Maybe there's new ways to give back and make a contribution. I'm looking forward to some mix of philanthropy - maybe through a somewhat different prism - as well as helping entrepreneurs build some significant new businesses.

If you're doing something new you've got to have a vision. You've got to have a perspective. You've got to have some north star you're aiming for, and you just believe somehow you'll get there, which kind of gets to the passion point.