“A Canticle for Leibowitz” … SciFi at over 50 years old, still unsettling. I finally managed to read it. Never knew what it was all about, but even just the title tells you this is no ordinary book.(And I haven’t had to — mostly unsuccessfully — translate as much Latin since I left school …)
It is science fiction at its best: it gives you a possible future, and its implications, that is easily believable as something that could happen more or less directly on the world trajectory we are all on. In fact, could happen almost immediately even now again, although the Cold War supposedly ended. And demands: so what are you going to do about it? Highly recommended if you care about this world.