Abstract

With chapter 10, the author starts the long study of the Republic, which lasts for 9 chapters. This chapter discusses the relevance of the theory of forms for Plato’s ethics. Considering the crucial passages of the Republic book V but also of the Phaedo, it is argued that the distinction between sensibles and forms is significant for ethics. Socrates fails to provide proper definitions in ethics because, lacking the theory of forms, he unsuccessfully tries to make the definitions fit with sensible properties.