It's very hard for someone who makes $1,000 a year or some who makes less than $1 a day to care about the environment.

I think that the environment is very a complicated question. I am very sympathetic to people who support the environment who live in the United States. I am very sympathetic to people who don't support the environment who live in a very poor country.

I think the best way to control a population is to urbanize and to educate women. We have seen historically in many, many countries that once women are educated and have opportunities, and that happens when they live in cities and once they improve their economies, they no longer want to have eight kids. They want to have one or two or maybe three. And that is much more sustainable for them because they have other opportunities.

NASA is increasingly not the future of space exploration. I love the fact that we have private sector folks devoting a lot of money to stimulate innovation in space technology.

International institutions like the Security Council, the General Assembly, the G20, the BRICs, the IMF, etc., continue to be little more than an extension of the (increasingly conflicting) values and interests of member states.

We're wealthy people. We're sitting here in New York, Washington. We live in a fantastically wealthy country. We don't have to worry about food. We don't have to worry about clothing. We wore the same shirt. We don't have to worry about our safety. It's very easy for us to be environmentalists. It's very easy for me to be an environmentalist. It's very easy for me to care about making sure that we protect the forests and the whales, and all that stuff. It's very hard for someone who makes $1,000 a year or some who makes less than $1 a day to care about the environment.

Academics were not a challenge when I was fifteen in college. The challenge was figuring out how to fit in socially.