Silicon Valley has some of the smartest engineers and technology business people in the world.

My vision is for a fully reusable rocket transport system between Earth and Mars that is able to re-fuel on Mars - this is very important - so you don't have to carry the return fuel when you go there.

You need to be in the position where it is the cost of the fuel that actually matters and not the cost of building the rocket in the first place.

I've actually not read any books on time management.

I'm glad to see that BMW is bringing an electric car to market. That's cool.

Winning 'Motor Trend' Car of the year is probably the closest thing to winning the Oscar or Emmy of the car industry.

I don't think it's a good idea to plan to sell a company.

I'd like to dial it back 5% or 10% and try to have a vacation that's not just e-mail with a view.

I hate writing about personal stuff. I don't have a Facebook page. I don't use my Twitter account. I am familiar with both, but I don't use them.

What I'm trying to do is, is to make a significant difference in space flight. And help make space flight accessible to almost anyone.

Trying to read our DNA is like trying to understand software code - with only 90% of the code riddled with errors. It's very difficult in that case to understand and predict what that software code is going to do.

Even if producing CO2 was good for the environment, given that we're going to run out of hydrocarbons, we need to find some sustainable means of operating.

Physics is really figuring out how to discover new things that are counterintuitive, like quantum mechanics. It's really counterintuitive.

I feel very strongly that SpaceX would not have been able to get started, nor would we have made the progress that we have, without the help of NASA.

Nobody wants to buy a $60,000 electric Civic. But people will pay $90,000 for an electric sports car.

If we drive down the cost of transportation in space, we can do great things.

I'm anti-tax, but I'm pro-carbon tax.

If anyone has a vested interest in space solar power, it would have to be me.

If humanity doesn't land on Mars in my lifetime, I would be very disappointed.

I think most of the important stuff on the Internet has been built. There will be continued innovation, for sure, but the great problems of the Internet have essentially been solved.