Note to the Reader

All proper names and place names are listed, most of them with brief iden- tifications, in the Glossary and Index of Names. Unfamiliar concepts are defined in the Glossary of Terms. Marginal page numbers, known as “Stephanus” page numbers (after an earlier editor of Plato’s works), are standardly used in scholarly citations. Line numbers, which are approximate in translations (including this one), refer to John Burnet, Platonis Opera, vols. I–V (Oxford: Clarendon Press, 1900–1907). The basis for the present translation is S. R. Slings, Platonis Rempublicam (Oxford: Clarendon Press, 2003).