The 2nd Scientific American Book of Mathematical Puzzles & Diversions
Martin Gardner
Superman and Philosophy: What Would the Man of Steel Do?
Mark D. White
Complexity of algorithms
Peter Gács
The Republic of Plato
Allan Bloom
Obedience to Authority: An Experimental View (Perennial Classics)
Stanley Milgram
Introduction to the Maths and Physics of Quantum Mechanics
Lucio Piccirillo