 The purpose of public policy is to improve people's lives, to improve intergenerational well-being. In other words, it's not only about today's but also about future generations. What is the role of public policy in trying to improve people's lives without passing a judgment on what those lives be? If you're genuine about well-being, then you have to think about economic, environmental and social issues in an integrated way. The source of comprehensive well-being is comprehensive wealth. In other words, it's not only capital in the machinery sense of human-built capital, but also natural resources, social capital, human capital, environmental capital, and economic capital. You try to build the infrastructure that gives you a platform for higher material well-being, which every study shows is important in people's lives. Sustainability is not only about economic but also sustainability of all those capital stocks. The beauty of having a framework of this sort is that you don't react to events after they happen. There is a huge focus now on eradicating poverty in a way that actually not only gives people money and housing and health and so on, but also in investing and skilling them so they can participate productively in societies.