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

You can just reload, propel it and fly again. This is extremely important for revolutionizing access to space because as long as we continue to throw away rockets and space crafts, we will never truly have access to space.

The primary means of energy generation is going to solar. It will at least be a plurality, and probably be a slight majority in the long term.

I think we should be very careful about artificial intelligence. If I had to guess at what our biggest existential threat is, it's probably that. So we need to be very careful...With artificial intelligence we're summoning the demon.

If you go back back a few hundred years, what we take for granted today would seem like magic - being able to talk to people over long distances, to transmit images, flying, accessing vast amounts of data like an oracle. These are all things that would have been considered magic a few hundred years ago.

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.

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