A few more pages of Eternal...
Takeaway: I love the use of a story or reference within the story that points to or reveals some larger meaning. For example, in one of Joel's memories, Clementine talks about the book the Velveteen Rabbit. Her reference is about the rabbit, but she is really describing the whole point about the film, the main message about relationships:
"It takes a long time. That's why it doesn't happen often to people who break easily, or have sharp edges, or who have to be carefully kept. Generally, by the time you are Real, most of your hair has been loved off, and your eyes drop out and you get loose in the joints and very shabby. But these things don't matter at all, because once you are Real you can't be ugly, except to people who don't understand."