Alex and Benjamin discuss Persian political theorist and Seljuk Vizier Nizam al-Mulk, a talented administrator who nonetheless left behind quite a mess. We compare him to Michael Psellos (his contemporary). We discuss the Sassanid origins of his political thought. We also go into the deep, intractable problems he had with both women and heretics, making it difficult for the Seljuk Empire to replicate the long-term success of the enormous ancient Persian states.