Justice: What's the Right Thing to Do

by Michael J. Sandel

Another way of putting this point is to say that morality is not empirical. It stands at a certain distance from the world. It passes judgment on the world. Science can’t, for all its power and insight, reach moral questions, because it operates within the sensible realm. “To argue freedom away,” Kant writes, “is as impossible for the most abstruse philosophy as it is for the most ordinary human reason.”33 It’s also impossible, Kant might have added, for cognitive neuroscience, however sophisticated. Science can investigate nature and inquire into the empirical world, but it cannot answer moral questions or disprove free will. That is because morality and freedom are not empirical concepts. We can’t prove that they exist, but neither can we make sense of our moral lives without presupposing them.