What is justice?

In class Friday we talked about Plato’s The Republic. Socrates, the main character and Plato’s teacher, argues with Thrasymachus and Glavcon about whether justice is healthy for one’s self. Thrasymachus argues that justice is to the advantage of the strongest. Where as, Glavcon says people are justice just for rewards or to avoid being punished. However, Socrates argues that justice itself is healthy for people by stating that justices is like order. He proves this by comparing the human soul to a city and how if everything the city is in order then the city is justice.

I disagree with Plato’s/ Socrates’ point a view of justice. Their view of justice is based on the idealism that everything will work perfectly and  sociality will argue with this idea. Though the theory sounds good, the practicality of it is far from being real. For justice to exist there has to be injustice or there would be no way to label people as justice or injustice. Then once injustice/ chaos and justice/ order exist, one has to establish what is justice and injustice. Most people establish this based off whatever their own set of morals are. So if someones’ morals are different then others, does that mean they are injustice. Because of this can justice really be defined or is it like what Thrasymachus argues that justice is something defined by the strong? In my mind because of this difference in what is believed to be justice or injustice Plato’s/Socrates’ view of justice is wrong.

So, the main point is, whether justice is just whatever the common belief of what is moral or immoral or is it what is considered to be legal or illegal? And if it is, is this decision made by yourself or by the strongest or by the majority.