It's not as though we can keep burning coal in our power plants. Coal is a finite resource, too. We must find alternatives, and it's a better idea to find alternatives sooner then wait until we run out of coal, and in the meantime, put God knows how many trillions of tons of CO2 that used to be buried underground into the atmosphere.

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

I realized that a methane-oxygen rocket engine could achieve a specific impulse greater than 380.

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.

I always invest my own money in the companies that I create. I don't believe in the whole thing of just using other people's money. I don't think that's right. I'm not going to ask other people to invest in something if I'm not prepared to do so myself.

Most people can learn a lot more than they think they can. They sell themselves short without trying.

Starting and growing a business is as much about the innovation, drive and determination of the people who do it as it is about the product they sell.