TUCKER CARLSON (HOST): I mean the urge to have sex and to procreate is, after breathing and eating, the most basic urge. How has it been subverted?
ELON MUSK (GUEST): Well it's just, in the past we could rely upon, you know, simple limbic system rewards in order to procreate. But once you have birth control and abortions and what not, now you can still satisfy the limbic instinct but not procreate. So we haven't yet evolved to deal with that because this is all fairly recent in the last 50 years or so before birth control.
I'm sort of worried that -- hey, civilization, if we don't make enough people to at least sustain our numbers perhaps increase a little bit, then civilization's going to crumble.