It is one thing to take inspiration from another's work for one's own creative writing, but it is entirely another to complete a work first conceived and named in another's fiction. What to make of such fictions within fictions?
Childe Roland to the Dark Tower Came
I've been thinking about quotations out of context for a long time: probably since Ray Bradbury made me fall in love with Yeats without my reading a word of him except Bradbury's quotations in title and epigraph. When such quotations are great -- and really that's the most fundamental reason for wanting to quote, or at least for remembering quotations, getting them by heart -- there are two ways they can be great: