This chapter examines the teachings of Plato and Hobbes regarding the purpose of the state. It discusses Plato's view that the highest purpose is the promotion of justice. For Plato, justice means acting according to one's nature and doing what is natural for each class of people. Hobbes believed the purpose is to provide security through deterring violence and promoting the survival of humanity. The chapter explores differing views of whether states should maximize their own power or restrain it, and whether they should try to help citizens be ethical.