The poor can't wait. Philanthropists needed to carry on being generous.

I have a particular relationship with Vinod Khosla because he's got a lot of very interesting science-based energy startups.

I would counsel people to go to college, because it's one of the best times in your life in terms of who you meet and develop a broad set of intellectual skills.

In software you can't really add people and expect to get more done, because their ability to understand the program and what's going on it would require so much investment and all their work would require so much review that you'd be more likely to slow things down.

If geek means you're willing to study things, and if you think science and engineering matter, I plead guilty. If your culture doesn't like geeks, you are in real trouble.

Taking a look back, one big reqret is, I left Harvard with no real awareness of the awful inequities in the world. The appalling disparities of health and wealth and opportunity that condemned millions of people to the lives of despair. I learned a lot here at Harvard about new ideas and economics, and politics. I got great exposure to the advances being made in the sciences. But humanities greatest advances are not in its discoveries, but in how those discoveries are applied to reduce inequity.

Windows 8 is key to the future, the Surface computer.