The philosopher Stendhal has real name Marie-Henri Beyle. An NPC called "Marie Henri" in the game who is a philosopher and perhaps says some of the writers quotes would be interesting.
He should look a bit like the wikipedia picture for the man.
He could be in a library maybe, and perhaps tell the player, he's actually quite famous. Perhaps refer to Wikipedian with 'Marie Henri Beyle' and hopefully he follows the redirect