I just read that book. Embarrassingly enough, given the context, I got chatgpt (or whatever) to recommend me a list of books based on ones I'd previously enjoyed and that came up. As a mathematician it really sang to me, given the current situation. Bearing the torch forward, I mean.
For those of you that allergic to coy, in-group signaling the passage is from, "A Canticle for Leibowitz"
https://en.wikipedia.org/wiki/A_Canticle_for_Leibowitz