Perhaps the greatest debate in sustainability is whether there are limits to growth. Is it possible to achieve sustainability while continuously growing the economy, or is there a fundamental trade-off between these two objectives? Ever since the publication of the book the “Limits to Growth” in the 1970s, this question has been fiercely debated. In this lecture, I explore the arguments both for and against the continued pursuit of economic growth in wealthy nations. I discuss topics including poverty eradication, the Environmental Kuznets Curve hypothesis, decoupling, planetary boundaries, happiness, GDP, and the rebound effect.