In environments where corporations become too interventionist and capture regulation themselves, the government must be able to battle back so that the people have a chance.

Climate is a global issue. Coal is still the energy that is being used more than anything else to make electricity. The United States is using less as we're turning more to gas. But, around the world, that's what they're using.

The two world wars boosted American power and devastated potential rivals to an extent that could not have lasted more than a few decades.

Berlin is a very edgy place, a very cosmopolitan place. It's a place where completely different ideas and cultures come together and clash in a very warm way. In a very warm-hearted way.

Everything today is "transient." Technology and its ability to empower actors large and small evolve so quickly that we have to get used to living in a world that exists in a more or less constant state of flux.

I believe that if you go and ask a chief executive of a Goldman Sachs or a BP, and they answer you honestly they want monopolies, they want government subsidies, they want preferences - they're not interested in free markets.

In environments where corporations become too interventionist and capture regulation themselves, the government must be able to battle back so that the people have a chance.