Iii iv, for next week you should read bks v vi: justice is a matter of convention. Justice is the advantage of the stronger is a universal concept: glaucon: content of justice varies place to place relative to what the political system is in each society. Relativist view of justice: plato: justice is universal in both form and content. Is natural sense of justice a product of natural justice or socialization: what you feel is often a product of socialization (values, beliefs, and education that you have inherited, justice and the soul: at the end of bk. For thrasymachus justice is universal in form: in all city-states it is the same, the advantage of the stronger. But in content justice is relative to time and place (in any particular society justice is what the laws says it is). For plato justice is universal, the same for everyone in all times and places.