My opinion is it's a bridge too far to go to fully autonomous cars.

Self-driving cars are the natural extension of active safety and obviously something we should do.

It's important that we attempt to extend life beyond Earth now. It is the first time in the four billion-year history of Earth that it's been possible, and that window could be open for a long time - hopefully it is - or it could be open for a short time. We should err on the side of caution and do something now.

Going from PayPal, I thought: 'Well, what are some of the other problems that are likely to most affect the future of humanity?' Not from the perspective, 'What's the best way to make money?'

Automotive franchise laws were put in place decades ago to prevent a manufacturer from unfairly opening stores in direct competition with an existing franchise dealer that had already invested time, money and effort to open and promote their business.

Work like hell. I mean you just have to put in 80 to 100 hour weeks every week. [This] improves the odds of success. If other people are putting in 40 hour work weeks and you’re putting in 100 hour work weeks, then even if you’re doing the same thing you know that you will achieve in 4 months what it takes them a year to achieve.

If you're trying to create a company, it's like baking a cake. You have to have all the ingredients in the right proportion.