If you want me to cut an actual quote down to 15 words it'll sound like absolute nonsense, but if a paraphrase is sufficient;
"Humans thrive under Order and suffer without it, but Chaos is both easy and attractive."
I think that hits all the major points;
(Fair warning: I'm not a Formalist per se, I think the Patchwork is way too silly an idea to put my name near it, but I hope that this is a good enough summary for someone with a low tolerance for Moldbuggery.)
See, the trouble I have with Moldbug is that it's written less like a thesis and more like a poem. I got through a bit of it, and it was pretty fun to read and it constantly felt like I was on the edge of some earth-shattering revelation which would destroy all my previous political notions...but in the end I came away not quite getting the point. In places where I did understand the point, I didn't understand how it was supported.
I can readily identify all the statements you've listed as belonging to Reactionary schools of thought, but the bit about Order...
People want to tell everything instead of telling the best 15 words. They want to learn everything instead of the best 15 words. In this thread, instead post the best 15-words from a book you've read recently (or anything else). It has to stand on its own. It's not a summary, the whole value needs to be contained in those words.
I'll start in the comments below.
(Voted by the Schelling study group as the best exercise of the meeting.)