The hidden hand of the market will never work without a hidden fist.

Our kids are going to be so angry with us one day. We've charged their future on our Visa cards.

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.

Once people get a taste for whatever you want to call it - economic independence, a better lifestyle, and a better life for their children - they grab on to that and don't want to give it up.

We have to be the best global citizens we can be.

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.

I think the Arab awakening has changed everything and I think a lot will depend on what people there ask of us, may be nothing, it may be a lot. I think that really depends how they find their voice and what they see as their real interest, and hopefully that would be for more schools and not more tanks.