With artificial intelligence we are summoning the demon.

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'd like to dial it back 5% or 10% and try to have a vacation that's not just e-mail with a view.

You could power the entire United States with about 150 to 200 square kilometers of solar panels, the entire United States. Take a corner of Utah... there's not much going on there, I've been there. There's not even radio stations.

Optimism, pessimism, f**k that; we're going to make it happen. As God is my bloody witness, I'm hell-bent on making it work.

I do love email. Wherever possible I try to communicate asynchronously. I'm really good at email.

The revolutionary breakthrough will come with rockets that are fully and rapidly reusable. We will never conquer Mars unless we do that. It'll be too expensive. The American colonies would never have been pioneered if the ships that crossed the ocean hadn't been reusable.