The country that owns green, that dominates that industry, is going to have the most energy security, national security, economic security, competitive companies, healthy population and, most of all, global respect.

Almost all the students who make it to Caltech, one of the best scientific universities in the world, come from public schools. So it can be done.

I don't think the Arab Spring had much to do with energy. I think it was just the opposite, in fact. I think the Arab Spring happened because particularly young people knew they were living in a context where they could not realize their full potential, that they are being kept down by their own governments.

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

We've given Iraq six months and I don't think things are really working out, so we should probably bring our troops home.

It is hard to partner with someone when you become so radioactive no one wants to stand next to you.

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