Ἠθικὰ Νικομάχεια (Nicomachean Ethics)

Aristotle ends the Ethics by announcing the Politics. The last chapter says that knowing what the good life is does not produce it, that habit is formed by law, and that the enquiry must therefore continue into constitutions. The Politics opens where that sentence stops. The dependence runs the whole way through. The Politics assumes the Ethics' account of virtue as a settled habit and of happiness as activity rather than feeling, and uses it as the standard by which a constitution is judged: a good state is one under which its citizens can actually live the life the earlier book described. Read alone, either half loses the argument that connects them.

The Good Place is a sitcom about moral philosophy that teaches Aristotle by name, and the Nicomachean Ethics is the text it settles on after trying the alternatives. Chidi lectures the other characters on virtue ethics explicitly, and the show's argument is Aristotle's: that being good is a practice rather than a state, that character is formed by habit, and that you cannot become virtuous alone. The final season turns on the claim that people can improve given time and company, which is the Ethics' position against the divine ledger the premise starts with. The series employed a philosophy consultant and the citations are on screen.