The Russian economy is way down because of the price of oil, and because the USSR was a big chunk of it.

By speeding the transition to cleaner energy, we can improve the lives of billions of people, while also reducing the risks we face from a changing climate.

On Sept. 11, 2001, thousands of first responders heroically rushed to the scene and saved tens of thousands of lives. More than 400 of those first responders did not make it out alive. In rushing into those burning buildings, not one of them asked, 'What God do you pray to?' What beliefs do you hold?'

The next day after I got fired, literally the next day, I started a new company.

For sure I would prefer Trump had not withdrawn from the Paris Agreement. But the fight against climate change is really done at the local level - whether it's cities, local governments or the private sector, corporate and individual. No matter what Trump says, nobody is going to go back and take the scrubber out or change back to polluting. The damage that Trump can do is if there are countries that are on the fence about whether they want to address the issue, this gives the naysayers, the doubters, those that don't want to do anything, a little more ammunition.

And I think the more money you put in people's hands, the more they will spend. And if they don't spend it, they invest it. And investing it is another way of creating jobs. It puts money into mutual funds or other kinds of banks that can go out and make loans, and we need to do that.

We can be certain that cities around the world will compete for the jobs that the next revival of the financial services industry will bring.