I just want to retire before I go senile because if I don't retire before I go senile, then I'll do more damage than good at that point.

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.

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.

In the case of Apple, they did originally do production internally, but then along came unbelievably good outsourced manufacturing from companies like Foxconn. We don't have that in the rocket business. There's no Foxconn in the rocket business.

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

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

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.