Imagine, just for the sake of discussion, that you had a few hours a week and a few dollars a month to donate to a cause - and you wanted to spend that time and money where it would have the greatest impact in saving and improving lives. Where would you spend it?

The main thing that's missing in energy is an incentive to create things that are zero-CO2-emitting and that have the right scale and reliability characteristics.

Digital reading will completely take over. It's lightweight and it's fantastic for sharing. Over time it will take over.

When I walk into a grocery store and look at all the products you can choose, I say, "My God!" No king ever had anything like I have in my grocery store today.

If you mess up, it's not your parents' fault, so don't whine about your mistakes, learn from them.

Once you embrace unpleasant news, not as a negative but as evidence of a need for change, you aren't defeated by it. You're learning from it.

If I hadn't given my money away, I'd have had more than anyone else on the planet.