The US spends more on energy R&D than all other countries put together, and I personally consider it quite inadequate.

Even when things are stable, that's not easy [to work in Africa] because there are not roads, and the weather is tough, the education system hasn't been there. But this is how you get great countries, is step by step.

By improving health, empowering women, population growth comes down.

Stolen's a strong word. It's copyrighted content that the owner wasn't paid for.

I believe the government has the right to recover from the heirs to the fortunes of its most successful citizens some portion of those fortunes.

I don't think there's anything unique about human intelligence.

You may have heard of Black Friday and Cyber Monday. There's another day you might want to know about: Giving Tuesday. The idea is pretty straightforward. On the Tuesday after Thanksgiving, shoppers take a break from their gift-buying and donate what they can to charity.