In this letter to his teenage daughter, the world-famous economist and number one bestselling author Yanis Varoufakis uses vivid stories to explain what economics is and why it is so dangerous. What is money and why does debt exist? Where do wealth and inequality come from? How come economics has the power to shape and destroy our lives? Economics is not a science, it is an epic drama: a battleground of ideas, a war between the powerful for our allegiance. In this universally accessible book, Yanis Varoufakis describes how this drama first emerged and has since come to dominate the fate of human societies worldwide. In answering all of the big questions about money and debt, power and inequality, he shows how economics is actually 'religion with equations', and in seeking to solve the problems of our world it has turned out to be a major cause of many of them.