George Lakoff is a “progressive” professor of cognitive linguistics who sees conservatives as holding a “strict father” model of morality and liberals (“progressives”) as holding a “nurturing parent” model. From The Man Who Framed Himself:
For now, we’re left with an elaborate variation on the ancient libertarian joke that Republicans want the government to be your father, Democrats want the government to be your mother, and libertarians want to treat you as an adult.