This paper develops an interpretation and analysis of the arguments for public education which open Book VIII of Aristotle's Politics , drawing on both the wider Aristotelian corpus and on examination of continuities with Plato's Laws . Part III : Sections VIII-XI examine the two arguments which Aristotle adduces in support of the claim that education should be provided through a public system. The first of these arguments concerns the need to unify society through education for friendship and the sharing (...) of a common end. Several versions of his second argument are considered, and the most promising of them is elaborated in connection with an examination of the links between instruction and legislation in the Laws . This yields what is probably the most compelling argument there is for the claim that public supervision of education is a necessary condition for a just society. (shrink)