I have a question that falls under literature, but I remember that Dante, Greek mythology, and Milton were required reading in my English courses in high school and university.
It's about an epithet that was, I think, made popular only by the book series Percy Jackson and the Olympians by Rick Riordan. In the series, the River Styx has been described and portrayed as the "River of Lost Dreams and Hopes." This, it would seem, has been picked up and applied by some people on the Net. But I can't find any other case when the Styx was previously described as such.
Of course I imagine the Styx must be a very barren and desolate place but, still, I would like to check if there are any other lines from perhaps Dante or another writer that could've inspired such a title. Or is it one writer's completely fresh and unique version, an employment of his artistic license?