Well, there are any number of good options. I'm amazed you have to do that at this level, but some books worth considering are: Fiction
1984
A Tale of Two Cities
Brothers Karmazov
Don Quixote
Far From the Maddening Crowd
Inferno
Naked Lunch
Slaughterhouse-Five
Tropic of Cancer
Wide Sargasso Sea
Non-Fiction
America: A Minority Viewpoint
Anarchy, State, and Utopia
Conquests and Cultures
Free to Choose
Homage to Catalonia
In Cold Blood
Mismeasure of man
Prince, The
Road to Surfdom
Wealth of Nations
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When the state is most corrupt, then the laws are most multiplied.
-- Tacitus