Depends on age but: Bible, Pilgrim's Progress, 1984, Animal Farm, Robinson Crusoe, Brave New World, Farenheit 451, D’Aulaires’ Book of Greek Myths, some Shakespeare & Dickens, How an Economy Grows and Why It Crashes. Maybe then Lord of the Flies, Rich Dad Poor Dad, The Gulag Archipelago, Atlas Shrugged, The Odyssey & The Iliad, The Trial.