Listmania!
All-time favourite
The Structure of Scientific RevolutionsThe Structure of Scientific Revolutions by TS Kuhn
Buy new: £7.07 / Used from: £3.71
A classic on paradigm construction and deconstruction of knowledge, not limited to sciencfic one, that shakes the understanding of the evolution of knowledge.
Orientalism: Western Conceptions of the Orient (Penguin Modern Classics)Orientalism: Western Conceptions of the Orient (Penguin Modern Classics) by Edward W. Said
Buy new: £7.66 / Used from: £5.50
Another classic controversial, but influential enough to be discussed for another century
Animal Farm: A Fairy StoryAnimal Farm: A Fairy Story by George Orwell
Buy new: £5.98 / Used from: £0.01
Precise and animated metaphor of communism
The HistorianThe Historian by Elizabeth Kostova
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Marvelous and Fascinating. More than a prequel to Bram Stoker's Dracula. If you are interested in Dracula, medieval history, middle Europe, DO read.