Principled empathy is sufficient, but there are other ways, so it isn’t necessary. So long as a person without empathy believes it’s in their self interest to be good to others, they will. The problem is that fascists believe their lives will be better by being evil, even though anyone from the top is a miserable bastard chasing a false dream. Even elong is worse off by chasing power, as he’s lonely and miserable living second to Trump