Elon Musk: "I like 'Stranger in a Strange Land', although it kind of goes off the rails at the end."

Tim Ferriss: "Ever feel like you don’t quite fit in? Don’t want to follow society’s silly rules?

Then you can probably relate to human-born and Martian-raised Valentine Michael Smith. In this controversial 1960’s cult classic, Heinlein questions long held assumptions on religion, government, and sexuality (free Martian love for all!).

It’s also where the term “grok” originated."