As you get to the end of the project you want to run all the tests cases against one version and make sure that you know that that version passed everything. And so as you get late in the project you get a little more conservative about making radical changes to the software.

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."

Digital reading will completely take over. It's lightweight and it's fantastic for sharing. Over time it will take over.

Married life is a simpler life. Who I spend my time with is established in advance.

Middle-income countries are the biggest users of GMOs. Places like Brazil.

It's an experiment, and it's probably good to have a couple states try it out to see before you make that national policy.

My guideline has always been to avoid a focus on me personally. Not because of any deep, dark secrets. Rather just a sense of privacy.