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

Every one of today's smartphones has thousands of times more processing power than the computers that guided astronauts to the moon.

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.

My hope is that we're going to end up with a far more tolerant society, where the erosion of privacy, to the extent it erodes, will be offset by increased tolerance.

We must become more comfortable with probability and uncertainty.