As we look ahead into the next century, leaders will be those who empower others.

Kenya’s M-Pesa proves that when people are empowered, they will use digital tech to innovate on their own behalf.

China and the U.S. need each other very badly. Yes, we should argue about some things, but it's not an 'us versus them,' it's an 'us and them' type scenario.

The future of Windows is to let the computer see, listen and even learn.

There's no such thing as going to a soapbox and saying, 'The government's corrupt,' and not having the intelligence service see your face. In the digital world, that can be done.

The pace of progress in biology creates a foundation that naturally gets picked up by the biotech and pharmaceutical industry to solve rich-world diseases. This is attractive science. It's science that people want to work on.

When you write a piece of software you assume a certain type of hardware. If you assume hardware that's too powerful then you can't sell many copies cause very few people have that machine. If you assume hardware that's too simple your product can't do as much.