In this talk, Matthieu presents his new book: "Altruism: The Power of Compassion to Change Yourself and the World”. He argues that altruism--genuine concern for the well-being of others--could be the saving grace of the 21st century. Altruism is the vital thread that can answer the main challenges of our time: the economy in the short term, life satisfaction in the mid-term, and environment in the long term. His message has been taken up by major economists and thinkers, including Dennis Snower, Joseph Stiglitz, and George Soros. Altruism is Matthieu’s masterwork - the fruit of years of research, experience, observations, and reflections.