If you get up in the morning and think the future is going to be better, it is a bright day. Otherwise, it’s not.

It is a mistake to hire huge numbers of people to get a complicated job done. Numbers will never compensate for talent in getting the right answer (two people who don't know something are no better than one), will tend to slow down progress, and will make the task incredibly expensive.

Weighing too much on someone's talent and not someone's personality. I think it matters whether someone has a good heart.

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.

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.

I don't spend my time pontificating about high-concept things; I spend my time solving engineering and manufacturing problems.

If anyone thinks they'd rather be in a different part of history, they're probably not a very good student of history. Life sucked in the old days. People knew very little, and you were likely to die at a young age of some horrible disease. You'd probably have no teeth by now. It would be particularly awful if you were a woman.