"1984" by George Orwell.
I can not explain how deeply is expressed the thought of an author in this novel. Not only the plot and characters are well set. The writer incorporates his own philosophy into the thoughts of Protagonist, while all things against which author stands or afraid of are depicted as anouter world around the Protagonist. But it gets even further, far beyond the authors fantasy. George Orwell lets us understand that he read K. Marx's "Capital" and many other related works but depicts the problems of class struggle through the plot, full of emotions, which is to us, human beings is way easier to conprehend, sympathise with and finally to remember, than dry theory or history of academic textbooks.
I believe that this noval, although a fiction, is a must read for all law, political science, economics and sociology undergraduate courses, as it has a potential to explain the reader so much more than theoretical materials.