The Natural Linguist

I was watching a video  from the Prager U YouTube channel where Dennis Prager asks the following question: But how do you KNOW that murder is wrong? Prager's idea is that we can think  murder is wrong, or feel inside that murder is wrong, but that this is not enough: according to him, it's vital for us, and for society at large that we KNOW murder to be wrong; and the only way we can KNOW it is that God tells us it is wrong. The problem with the example of murder, is that it's completely relative. Murder is defined  as the illegal killing of human beings. So anytime we want the killing of some being to be considered "wrong", all we have to do is to classify that killing as "murder". And conversely, if we want the de-lifing of some being to be permissible, we classify it as not murder. Some examples of killing that is not murder are these: War . It's perfectly legal to kill someone -- or millions of people -- using war as an excuse. There are many exa