Full transcript of the quote OP was referencing (at 1:07:44 as indicated by visionscaper)

"I think we should be very careful about artificial intelligence. If I were to guess at what our biggest existential thread is, it's probably that. So, we need to be very careful with artificial intelligence. I am increasingly inclined to think that there should be some regulatory oversight at the institutional, maybe at the national and international - level, just to make sure we don't to something very foolish. I mean with artificial intelligence we are summoning the demon. You know - you know all those stories where there's the guy with the pentagram and the holy water and he's like, yea, sure you can control the demon... didn't work out."

I really like how Elon Musk thinks big and acted on it : "..get us back on track of extending life beyond earth, that’s the reason for starting SpaceX" (51:43)

Terrible title.