I really had a lot of dreams when I was a kid, and I think a great deal of that grew out of the fact that I had a chance to read a lot.

If African farmers can use improved seeds and better practices to grow more crops and get them to market, then millions of families can earn themselves a better living and a better life.

It's not easy to remember, but IBM was the computer industry when I was growing up. You loved 'em. You hated 'em. You knew what they were doing. They had set a standard for mainframes. They also set a standard for great sales focus and heavy product R & D.

You have to be willing to see that sometimes the governments of these poor countries don't come through. You have to think about that as a constraint. How do you help them be better? How do you come up with things that actually work, even in those tough situations.

So on the demand side [for energy], there have been a variety of policies that globally have been way over $50 billion a year of tax credits, raising the price of electricity through things like renewable portfolio standards, so the total amount of money that's gone into sending a price signal to push up demand versus what would happen without it has been gigantic.

If there was an epidemic, that definitely would make people accept vaccines. I wouldn't hope for that, of course, but if you wanted people to love vaccines, an epidemic would remind them how magical they are.

Ninety percent of the cases of polio are in security-vulnerable areas.