[bsenftner]

It's subtle in how it delivers it's brilliance: A Clockwork Orange.

Warning: spoilers follow that do not diminish the knock out punch this work delivers: It's written in it's own language, a mixture of Russian and UK slang, which one cannot read at first. About 3 chapters in, the language clicks and then a good reader starts the book over from the beginning. It is a popular book due to the film, and the ultra violence depicted within, but it is also ground breaking philosophical literature because the main character is a hardened criminal and is the narrator, he spends the entire novel explaining his philosophy of life, which by the end of the novel you realize is the same philosophy of modern politics, and the UK edition of the novel ends with the entire novel being the story of a senior member of parliament's youth origin story.

The fact that the novel is in a fictional language increases the reader's submersion in the story line, creating one of the most impactful novels I know.

Another great read, much shorter, more like getting into a street brawl: Notes From The Underground by Dostoyevsky. Practically the creator of self critical essays, and often the first read for people interested in Existentialism.

Anything from the "Beat Generation" authors, anything from Philip K Dick, anything from Herman Hesse.

[mariusor]

If one gets into the books that invent their own dialect, the most dense I found was "Riddley Walker" by Hoban Russel. As a non native English reader it was very difficult to make progress, but once the understanding settles in, it's a pretty nice story. Also of note is Anathem, even though Stephenson's jargon is more accessible, I think, to Latin languages speakers.