I really do think cancer will largely be a solved problem. I think most of the infectious diseases like malaria - our foundation is very involved - once we're finishing polio eradication, then starting up this malaria eradication, and getting that done as fast as we can.

The great thing about a computer notebook is that no matter how much you stuff into it, it doesn't get bigger or heavier.

In the same way that when the car got going, people thought it would be an electric car, people thought it would be a steam car.

In energy, you have to plan and do research way in advance, sometimes decades in advance to get a new system that's safer, doesn't require us to go around the world to get all our oil.

Like my friend Warren Buffett, I feel particularly lucky to do something every day that I love to do. He calls it "tap dancing to work."

(Talking about his first computer) Like all kids we not only fooled around with our toys, we changed them. If you've ever watched a child with a cardboard carton and a box of crayons create a spaceship with cool control panels, or listened to their improvised rules, such as "Red cars can jump all others," then you know that this impulse to make a toy do more is at the heart of innovative childhood play. It is also the essence of creativity.

Internet TV and the move to the digital approach is quite revolutionary. TV has historically has been a broadcast medium with everybody picking from a very finite number of channels.