The computer will live your life, listen to you and understand you better than humans can.

The spread of online information isn't just good for charities. It's also good for donors. You can go to a site like Charity Navigator, which evaluates nonprofits on their financial health as well as the amount of information they share about their work.

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

Nigeria has moved into low-middle-income, but their north is very poor, and the health care systems there have broken down.

In the next 15 years, we can halve childhood deaths. That's doable.

The genius of capitalism lies in its ability to make self-interest serve the wider interest. The potential of a big financial return for innovation unleashes a broad set of talented people in pursuit of many different discoveries. This system, driven by self-interest, is responsible for the incredible innovations that have improved so many lives.

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.