I can recommend anything by the Argentine author Jorge Luis Borges. He's primarily an author of short stories. Of those, The Library of Babel is how I was introduced to him.

There's a cool programming project already based on this short story that I've enjoyed exploring: see https://libraryofbabel.info/

And looks like there's a link to the story on archive.org: https://archive.org/details/TheLibraryOfBabel/