“Well, actually, there is a Heinlein book. The Moon is a Harsh Mistress. Okay, yeah, but that's slightly different. That's a gravity slingshot or...”
Elon Musk – "In 36 months, the cheapest place to put AI will be space” · Dwarkesh Podcast
The moon is a harsh mistress
Robert A. Heinlein
Where The moon is a harsh mistress was mentioned: 1 timestamped quote from 1 episode across 1 podcast.