We all learn best in our own ways. Some people do better studying one subject at a time, while some do better studying three things at once. Some people do best studying in structured, linear way, while others do best jumping around, surrounding a subject rather than traversing it. Some people prefer to learn by manipulating models, and others by reading.

I was lucky to be involved and get to contribute to something that was important, which is empowering people with software.

A fundamental new rule for business is that the Internet changes everything.

I feel pretty stupid that I don't know any foreign languages. I wish I knew French or Arabic or Chinese.

Capitalism has worked very well. Anyone who wants to move to North Korea is welcome.

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.

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