German idealist and moral philosopher Immanuel Kant is probably best known for his “Categorical Imperative,” which says that you should act following moral rules you could rationally support as universal law. In other words, do only what you would have everyone else do. But are Kant’s rules really a good guide to action? Does he have anything to say about things people confront in everyday life, like friendship, manners, or gossip? Is Kant overly optimistic about our capacity to use reason and choose freely? Or was he right that rationality is the key to moral progress? Josh and Ray do right by Karen Stohr from Georgetown University, author of Choosing Freedom: A Kantian Guide to Life.