Philosopher-kings: A Communitarian Political ProjectThis essay begins by presenting the argumentative structure of the fifth book of Plato's Republic and defends that its central argument is that the unity of the city depends on the public life of the rulers, which implies the prohibition of family and private property. Next, it tries to show that the philosopher-kings are a means, one among others, to produce this very specify notion of political unity. Finally, it briefly points out that this reading is compatible with the Platonic political proposals found in the Timaeus, the Laws, Aristotle's Politics and in the Seventh Letter.