when i read labyrinths a few years back it was the first time in years i’d been floored by someone’s writing. the stories themselves are fantastic, but the interplay of ideas when you read them in conversation with one another is what i found most rewarding. can’t think of many other writers who provoke so much thought in a relatively short space - remember feeling like he’d melted my mind (in a very good way). library of babel definitely the most memorable for me, and i also remember finding the history of tlon and uqbar fascinating and unsettling.
would second the ‘borges is just that good’ comment.