Gjallarhorn
N'yog-Sothep
Apparently, God.A person does not need a moral code to do as he wishes. I don't need permission to go a month without bathing if I wish.
However society can develop its own code of behavior. Other people may not like my body odor and demand that I bathe. However I may decide that I am right and they are wrong and who is to say which is which?