We need more pessimism that the future might be a lot worse, and we need more optimism that the future might be better.

If the slogan for Google is 'Don't be evil', then the slogan for Uber is 'Do a little bit of evil & don't get caught.'

We wanted flying cars, instead we got 140 characters.

Forget startup companies. The next frontier is startup countries.

American government is not dominated by engineers, it is dominated by lawyers. Engineers are interested in substance and building things; lawyers are interested in process and rights and getting the ideology correctly blended. And so there is sort of no really concrete plan for the future.

My own answer to the contrarian question is that most people think the future of the world will be defined by globalization, but the truth is that technology matters more.

As an investor-entrepreneur, I’ve always tried to be contrarian, to go against the crowd, to identify opportunities in places where people are not looking.