Central banks are major players in today’s economic and financial policy-making. While respected for their technical acumen and their pivotal role in defusing the global financial crisis, they are at the same time mistrusted by others and considered to be too powerful. In order to contribute to a better understanding of the why, what and how of central banking, this book traces the progress of central banks from modest beginnings, including financing wars, to the powerful institutions they have become. It describes the evolution of the Bank of England to a fully-fledged central bank, the very different route taken by the Federal Reserve and, much later, by the European Central Bank. The gold standard, floating exchange rates, and the battle against inflation are covered in depth, alongside a review of modern monetary policy and central banks’ role in maintaining financial stability. Throughout the book, the ups and downs of central banks’ relationship vis-a-vis their governments are arecurring theme, even surmising that reigning in the independence of central banks risks inflicting serious damage to economic and financial stability. Uncovering the challenges that the money masters may face in an uncertain future, this book will be of interest to academics, researchers, and practitioners in central banking, finance, and economics at large.