From the New York Times best-selling author of Cod and Salt, a definitive history of paper and the astonishing ways it has shaped today's world. Paper is one of the simplest and most essential pieces of human technology. For the past two millennia, the ability to produce it in ever more efficient ways has supported the proliferation of literacy, media, religion, education, commerce, and art; it has formed the foundation of civilizations, promoting revolutions and restoring stability. One has onl