The contributions to this symposium are the first fruits of the research project “Constitutions of Value.” They are based on presentations and discussions at a workshop we convened at the University of Würzburg on 12 and 13 December 2019 (with funds made available by the state of Bavaria for the research network ForDemocracy). We had invited lawyers, an economist, a sociologist, a historian, a philosopher, and a commons activist to think about the role of law (together with politics, economics, technology and science) in co-constituting value and value practices. In this introduction we seek to explain what prompted us to assemble this multidisciplinary group to engage in and contribute to a legal study of value, what we hope to achieve with this project, and the challenges that it needs to face.