It's too late to take action. But let's assume we have ten years left to finally face up to the world as it has become, i. e. less and less favorable to our existence, and that of other living beings. Ten years to make a sharp political turn. Ten years to rid ourselves of our productivist and consumerist fads. Ten years to learn how to regenerate nature, which is in the process of accelerating destruction. Ten years to tighten our inequalities, while restoring meaning to our lives. Ten years, finally, to start building a new civilization. If it were possible, this is what we would propose. Seven researchers propose to rebuild our society around a series of economic and institutional measures based on long-term research and a well-founded vision of the future. In this book, they lay the foundations for an ambitious political program for a new era.