Zero: The Biography of a Dangerous Idea by Charles Seife. About the history of the number zero. In the first few chapters it is about how the Greeks and Christians wouldn's accept the concept of void (zero) or the infinite (anything divided by zero) as it was contrary to Aristotle's proof of the existence of God. It took the Islams conquering the Indians -- who didn't have such qualms about Greek religious beliefs -- to bring zero to the western world. It also talks about how Pythagoras encouraged people to kill others (and was successful) for espousing and revealing the concept of zero or irrational numbers. Ironically Pythagoras' beloved "golden ratio" -- the heart of ancient Greek architecture -- is an irrational number. As this book reinforces, religion fucks up everything as always.