What IS good, and how do we determine it?

[Thumpalumpacus]

What I said was the murder is inherently immoral. Murder is already defined as a wrongful killing.

My apologies. Over a thread this long, the memory of an aging man slips.

So what you're saying is that sometimes killing a human being is not wrong?

I believe killing is only moral in self defense. I'm sorry if you find this sad.

Yet, you've defined "self-defense" as defending a third party, even a third party unknown to the defending killer, meaning that your definition of moral killing, as opposed to murder, is rather elastic. Were the German soldiers defending Berlin in 1945 behaving morally? They knew the war was lost, they knew that Jews had been gassed by the millions, and they fought because they were afraid of what the Russians might do to their wives and daughters. Yet their fighting prolonged the war, prolonged Hitler's life, and killed men themselves.

Were those killings moral?

So the answer to your question depends on the circumstances.

And that, my dear, is the essence of moral relativity.