I always see what’s... wrong. Would you want that? When I see a car or a rocket or spacecraft, I only see what’s wrong. I never see what’s right. It’s not a recipe for happiness.

The fuel cell is just a fundamentally inferior way of delivering electrical energy to an electric motor than batteries.

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.

We have a strict 'no a-hole policy' at SpaceX. And we fire people they are. I mean, we give them a little bit of warning. But if they continue to be an a-hole, then they're fired.

It is definitely true that the fundamental enabling technology for electric cars is lithium-ion as a cell chemistry technology. In the absence of that, I don't think it's possible to make an electric car that is competitive with a gasoline car.

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.

With artificial intelligence we are summoning the demon.