One of the books Moldbug mentions a lot is "The Machiavellians: Defenders of Freedom," by James Burnham.
I found its audiobook on YouTube. I've read it, it's pretty good.
If you're interested.
YouTube | James Burnham - The Machiavellians: Defenders of Freedom (Full Audiobook)
https://www.youtube.com/watch?v=DnedOJPDzoo