It has always been my view that terrorism is not spawned by the poverty of money; it is spawned by the poverty of dignity. Humiliation is the most underestimated force in international relations and in human relations. It is when people or nations are humiliated that they really lash out and engage in extreme violence.

When people get frustrated, it's when they feel they are living in a context that deprives them of dignity, deprives them of justice and deprives them of the freedom to realize their full potential, and that to me is what the Arab awakening was all about. I think it applied to every country, and so I have been an unmitigated supporter of it.

Capitalism makes people unequally rich. Communism makes people equally poor.

Hope and optimism aren't just attitudes, they are life strategies.

You always have to remember that Mother Nature is a lot like your body. If your temperature goes from 98.6 to 100.6, you don't feel so good. If it goes from 100.6 to 102.6, well, you call the doctor. If it goes from 102.6 to 104.6, you're in the emergency room at a hospital. The same with Mother Nature - small changes in global average temperatures have a huge climate effect.

I'm a radical pro-immigration advocate. I'm not saying we just look at the Muslim world or we just look at China, we just look at India as a source of our talent. But, one thing we know... first or second generation or new immigrants or children of immigrants have started about 40% of the Fortune 500 companies. For me it's always been a really very important issue that I want America to be open to the most energetic and talented people from around the world.

I don't think we replaced the Soviet Union with Al Qaida. I think we replaced, we should have, Soviet Union with the merger of globalization and the IT revolution. I think it's that. That is the real challenge that we face today. Unlike the Soviet Union, it has no face, it has no missiles, but it is something that challenges every job, every city and every community.