I have different processes for notes on fiction and notes on essays.
For fictions, I like to note beautiful or touching quotes in a notebook. It's very nice to read them after a year or two, although some are just meaningless out of context. I don't need to refer to them or search in them so paper is good.
For essay, I take notes on my computer, because I want to be able to search, and connect notes. I use logseq, which is an outliner tool with bidirectional linking (local-based and free software). It's great for zettelkasten.
While we're doing reading recommendations :
The Dispossessed by Ursula le Guin is one of the best novel I've read. It's "political and social SF".
Thank you for your thoughts. The idea of keeping track of the touching quotes is something I should do.
logseq looks awesome. Surprised I haven't seen it when looking for note taking things.
Thanks for the recommendation.