An entrepreneur must deal with more uncertainty than a professional with a well-defined role.

When I was starting out, I followed along the path that seemed to be marked out for me - from high school to college to law school to professional life.

People don't want to believe that technology is broken. Pharmaceuticals, robotics, artificial intelligence, nanotechnology - all these areas where the progress has been a lot more limited than people think. And the question is why.

Credentials are critical if you want to do something professional. If you want to become a doctor or lawyer or teacher or professor, there is a credentialing process. But there are a lot of other things where it's not clear they're that important.

I think it's a lot easier to tell a war story about two sides of a conflict with one another as opposed to one side in conflict with itself.

We really need a public-interest government that is not taking marching orders from the fossil-fuel industry and the banks and the war profiteers. We really need a government that is acting on our behalf.

The leading cause of death for girls 15 to 19 worldwide is not accident or violence or disease; it is complications from pregnancy. Girls under 15 are up to five times as likely to die while having children than are women in their 20s, and their babies are more likely to die as well.

As a culture, working-class white Americans like myself had no heroes. We loved the military but had no George S. Patton figure in the modern army. I doubt my neighbours could even name a high-ranking military officer.