I'm optimistic we can figure out a way to do business with them.

Anytime you introduce volatility, it is not good for business and not good for travel.

I started in investment banking at Allen & Company in 1991. It was the go-go days of media mergers, and we were incredibly busy with one deal after another. Unlike typical investment banking groups, even in the midst of merger mania, we didn't have a formal face-time culture - and I felt empowered by that.

Failure can teach you something, and as long as you're moving very, very quickly, you're going to start piling up the wins. Speed gives you the luxury to be able to fail.

Uber is a company that is redefining the transportation industry on a global basis; to be part of that story is something that is interesting and would be a real privilege.

Put the right people in the right places, and then you trust them to do the right stuff.