1984 is undoubtedly one of the best pieces of literature out there. If you've heard the term "Orwellian" and you don't know where it comes from, well... it originates from here. It is a truly horrifying book in many ways, and the parallels to today's society are unfathomable. Don't want to spoil it much. Give it a read.
"Under the spreading chestnut tree I sold you and you sold me: There lie they, and here lie we Under the spreading chestnut tree."