Is money precious and scarce, necessitating iron fiscal discipline? Must the government always balance the books or risk ruin? Or is money, in fact, a flexible tool that can be used to mobilize our collective resources to serve those who need them? In this book, leading Modern Money Theory (MMT) advocate Randy Wray explains that the only real constraints on public policy are physical resources, technological capacity and political will: but never money. He shows how modern sovereign governments spend by keystroking money to bank accounts.