In Lewis Carroll’s “Through The Looking Glass,” Humpty Dumpty tells Alice, “When I use a word, it means just what I choose it to mean — nothing more nor less.” Alice wonders whether he can make words mean different things. “The question is,” Humpty Dumpty replies, “which is to be master, that’s all … They’ve a temper, some of them — particularly verbs, they’re the proudest — adjectives you can do anything with, but not verbs — however, I can manage the whole lot of them! Impenetrability. That’s what I say!” During a campaign stop in South Carolina in December...