How do we punish others socially, and should we do so? In her 2018 Descartes Lectures for Tilburg University, Linda Radzik explores the informal methods ordinary people use to enforce moral norms, such as telling people off, boycotting businesses, and publicly shaming wrongdoers on social media. Over three lectures, Radzik develops an account of what social punishment is, why it is sometimes permissible, and when it must be withheld. She argues that...