On the fourth of January, 1934, A young man delivered a report to the United States Congress that 80 years on, still shapes the lives of everyone in this room today. Still shapes the lives of everyone on this planet. That young man wasn't a politician, he wasn't a businessman, a civil rights activist, or a faith leader. He was the most unlikely of heroes, an economist. (Laughter) His name was Simon Kuznets and the report that he delivered was called, "National Income, 1929-32" Now, you might think that this is a rather dry and dull report, and you're absolutely right. It's dry as a bone. But this report is the foundation of how, today, we judge the success of countries. What we know best as Gross Domestic Product, or GDP. GDP has defined and shaped our lives for the last 80 years. And today I want to talk about a different way to measure the success of countries. A different way to define and shape our lives for the nest 80 years. But first, we need to understand how GDP came to dominate our lives. Kuznet's report was delivered at a moment of crisis. The U.S. economy was plumetting into the Great Depression. and policy makers were struggling to respond. Struggling because they didn't know what was going on. They didn't have data and statistics. So what Kuznet's report gave them was reliable data on what the U.S. economy was producing, updated year by year. And armed with this information, policy makers were, eventually, able to find a way out of the slump. And because Kuznet's invention was found to be so useful, it spread around the world. And now today, every country produces GDP statistics. But, in that first report, Kuznets himself delivered a warning. It's in the introductory chapter, page 7 he says, "The welfare of a nation can, therefore, scarcely be inferred from a measurement of national income as defined above." It's not the greatest soundbite in the world, And it's dressed up in the coursest language of the economist, but his message was clear, GDP is a tool to help us measure economic performance. It's not a measure of our wellbeing. And it shouldn't be a guide to all decision making. But we have ignored Kuznet's warning. We live in a world where GDP is the benchmark of sucess in a global economy. Our politicians boast when GDP goes up, Markets move and trillions of dollars in capital move around the world based on which countries are going up, and which countries are going down. All measured in GDP. Our societies have become engines to create more GDP. But we know that GDP is flawed. It ignores the environment. It counts bombs and prisons and progress. It can't count happiness or community. And it has nothing to say about fairness or justice. Is it any surprise, that our world, marching to the drumbeat of GDP, is teetering on the brink of environmental disaster and filled with anger and conflict? We need a better way to measure our societies. A measure based on the real things that matter to real people.