Economics matters. Its theories are the mother tongue of public policy, the rationale for multi-billion-dollar investments, and the tools we use to tackle global poverty and manage our planetary home. Pity then – or more like disaster – that its fundamental ideas are centuries out of date, but still dominate decision-making for the future. Instead of criticising the past, this book takes the long view forwards, identifying seven insights to help the twenty-first-century economist bring humanity into the global sweet spot (shaped like a doughnut) that combines human prosperity with ecological sustainability