 My story of change, my story of change, my story of change. Nobody really likes paying tax, and a lot of people think it's kind of boring. But taxes are social superpower because of what it gives to our societies. It's the four Rs of tax, revenues that we all need to fund our public services, redistribution to curb the inequalities that we all face, repricing of things like tobacco consumption or carbon emissions that are bad for all of us, and the fourth are perhaps the most important representation when we pay tax, we strengthen the social contract between citizens and government. Every year, cross-border tax abuse by multinational companies and wealthy individuals costs us globally almost half a trillion dollars, 480 billion we estimate. The greatest part of that in absolute terms is lost by high-income countries in the global north, but the losses suffered in the global south are a much bigger share of their current tax revenues and a much bigger share of public spending. The opportunity now is for all countries of the United Nations to create an international framework in which everyone can have a say in setting those rules, making sure that we have tax rules that are actually effective for everyone and finally ending the tax abuse of multinational companies and of wealthy individuals hiding their assets offshore. My story of change really is one of engaging on questions of tax, discovering the absence of data and the neglect, and really working on that both on a research and an advocacy perspective and seeing over two decades the recognition of the importance of tax. We were able to create the government revenue data set which for the first time gives us consistent comparable data for the tax revenues of almost every country in the world year after year and that allows us to understand progress and to do all sorts of bits of research that were never possible before.