The world is a global economy. I thought, 'It's a bummer we don't have a unifying currency.' Then I saw Bitcoin had already had a crash and had the resistance to recover. The community was strong enough to push it through again. That's really exciting.

We tax our companies more than any other country in the world, so we really are not really encouraging businesses to grow and expand, and over time, that's going to make it so that we diminish our role in the global economy.

We're so interdependent, and what one country does is such an important part of what happens in the global economy.

Cities generate most of the global economy, and most of its energy use, resource demands and climate emissions. How we build cities over the next decades will largely determine whether we can deliver a bright green future.

If we don’t concentrate on resurrecting science, we’re not going to be able to compete in a global economy.

I represent the Port of Philadelphia, and I know firsthand the important role that ports play in the national and global economy. I have also seen how simple accidents can have devastating impacts on the port system.

Our long-term prosperity depends critically on the ability of world leaders to make politically difficult decisions at a time when the global economy is still vulnerable on so many fronts.

Here's the secret you should remember whenever you hear someone lamenting how tough it is to get ahead in the postindustrial global economy: Few people work nearly as hard as they could.