Alaskan Alpine Club -- Offbeat, but interesting. (I can't find the reference, CURSE YOU GOOGLE! but somewhere in this rabbit hole, I found a profound essay that talked about human conversation as an error correcting mechanism, and it changed how I talk with others forever)
Profit and Loss by Mises made me realize that the reason the free market works is akin to natural selection.
It's not even the main point of the essay.
Anyway it's great and a short read, also free
The Last Man by Francis Fukuyama. The end of history started as an essay and became a book, but the last man is a couple chapters at the end of that book. It talks about how people (I think mostly men) find purpose in an era where every frontier has been explored and closed
Not changed my mind (on what? "The holocaust is bad"?) but Night (and its sequel Day; I haven't read Dawn, which comes in the middle, yet) by Elie Wiesel. Horrifying, but important. Note that it's semi-fictionalized.
On truly changing the way I thought of something, I'd say some of Cory Doctorow's writing on Pluralistic, namely on if enshittification was a necessary consequence of the SEO spammers or a conscious choice by Google to increase.
Finally, Lies My Teacher Told Me. It's about how textbooks (in the US at least) misrepresent history, and how many of them still teach things effectively from the 50s. It's great. If you struggle with context and/or comprehending it (it's written fairly academically), he has a young readers edition (actually I'd recommend it anyway; it's good and young readers editions often provide more context than the 'adult' versions)
https://web.archive.org/web/20000620164302/https://www.wired...
Alaskan Alpine Club -- Offbeat, but interesting. (I can't find the reference, CURSE YOU GOOGLE! but somewhere in this rabbit hole, I found a profound essay that talked about human conversation as an error correcting mechanism, and it changed how I talk with others forever)
https://billstclair.com/doug/alaskanalpineclub.com/index.htm...
Travels with Samantha by Philip Greenspun - showed me storytelling on the web in a way I had never seen it before
https://philip.greenspun.com/samantha/