" The entailments of this metaphorical mode of thought are quite considerable: Moral standards that change with time, or social situation, or ethnicity are a danger to the functioning of society. There is no such thing as progress in morality; what is and is not moral is fixed for all time, and any change of standards in the name of would-be moral progress is really an evil, a chipping away at our moral foundations, a tearing of our moral fabric, and so on. "

― George Lakoff , Moral Politics: How Liberals and Conservatives Think