Storm Raven said:
Neither of those points removes the fact that it is copyright infringement.
(1) Noting the source is irrelevant when determining if something is copyright infringement.
(2) Whether you gain financial benefit or not is irrelevant when determining if something is copyright infringement.
There is a concept called fair use - and I'd say a few choice quotes from Lord of the Rings in a discussion on the nature of heroism falls into that category.
It better, 'cuz the Tolkein estate don't take no crap from anybody.