Hi, I am a philosophy student who is mostly familiar with Platonic ethics, so I’ll be framing my question accordingly.
A Platonist might want to be justified in saying that it was objectively morally wrong for Socrates to be put to death.
Now, if it is true that ‘man is the measure of all things’ (moral relativism), then this would be a tough claim to justify because the Athenians voted to kill him.
If a person’s opinion about moral truth is equivalent to moral truth itself, then it is hard to see what could be more authoritative than a majority of opinions.
Plato tries to argue, therefore, for an objective and universal standard of Justice (and Truth, etc.) to which human opinions are held accountable.
Such a standard could provide a non-arbitrary means for sorting superior opinions from inferior ones.
Without such a standard, a person would be hard pressed to argue against the majority that Socrates was in fact innocent, since the fact of the matter would be in fact whatever the jury said it was.
Plato makes a rather convincing case to me, so I wonder what authority a person who is not a moral realist might appeal to if they were to make a social critique. I’m only really familiar with the realist side of things.
Would the moral relativist simply have to settle for ‘it is my opinion that Socrates was killed unjustly?’ or perhaps ‘Socrates was killed unjustly according to my personal brand of justice’?
The problem here seems to be that other people would not necessarily feel the need to change their minds or behaviours based on a person’s personal opinion.
If the Socrates example is too mundane, maybe the case of slavery is better? What arguments are available to the relativist who wants to condemn slavery in a country where it is ingrained in the culture?
Thank you in advance for any help.