Over time I think we will probably see a closer merger of biological intelligence and digital intelligence.

Brand is just a perception, and perception will match reality over time. Sometimes it will be ahead, other times it will be behind. But brand is simply a collective impression some have about a product.

It would take six months to get to Mars if you go there slowly, with optimal energy cost. Then it would take eighteen months for the planets to realign. Then it would take six months to get back, though I can see getting the travel time down to three months pretty quickly if America has the will.

I think a lot of the American people feel more than a little disappointed that the high-water mark for human exploration was 1969. The dream of human space travel has almost died for a lot of people.

To make an embarrassing admission, I like video games. That's what got me into software engineering when I was a kid. I wanted to make money so I could buy a better computer to play better video games - nothing like saving the world.

In order to have your voice be heard in Washington, you have to make some little contribution.

I think it matters whether someone has a good heart.

America is the spirit of human exploration distilled.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

If we're going to have any chance of sending stuff to other star systems, we need to be laser-focused on becoming a multi-planet civilisation.

Any product that needs a manual to work is broken.

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 think we are at the dawn of a new era in commercial space exploration.

The space shuttle was often used as an example of why you shouldn't even attempt to make something reusable. But one failed experiment does not invalidate the greater goal. If that was the case, we'd never have had the light bulb.

It is theoretically possible to warp spacetime itself, so you're not actually moving faster than the speed of light, but it's actually space that's moving.

Land on Mars, a round-trip ticket - half a million dollars. It can be done.

So we originally expected to make about 35 gigawatt hours at the cell level and about 50 gigawatt hours at the module or pack level. Now we are expecting to do about 150 gigawatt hours in the same volumetric space as the original design.

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

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.

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

If you look at space companies, they've failed either because they've had a technical solution where success was not a possible outcome, they were unable to attract a critical mass of talent, or they just ran out of money. The finish line is usually a lot further away than you think.

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

Selling an electric sports car creates an opportunity to fundamentally change the way America drives.

Biofuels such as ethanol require enormous amounts of cropland and end up displacing either food crops or natural wilderness, neither of which is good.

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

As you heat the planet up, it's just like boiling a pot.

Life is too short for long-term grudges.

Boeing just took $20 billion and 10 years to improve the efficiency of their planes by 10 percent. That's pretty lame. I have a design in mind for a vertical liftoff supersonic jet that would be a really big improvement.