Private law has often been conceived as a timeless, universal project. Yet, since the Industrial Revolution, grand socio-economic transformations have drawn private law into the whirl of time. Since the social function of private law is in flux, also its basic notions, doctrines and institutions are in continuous need of justification. The 2023-2024 ACT Lecture Series asks how intersecting trends such as digitalization, financialization and concerns for sustainability influence private law, and vice versa: What is the future of private law—and what are the agents, concepts, and processes through which its future(s) will be made?