"Language is a wild thing. It is vague and anarchic. Style, meaning, and usage are continually on the move. Throughout history, for every mutation, idiosyncrasy, and ubiquitous mistake, there have been countervailing rules, pronouncements and systems making some attempt to bring language to heel. From the utopian language-builder to the stereotypical grammatical stickler to the programmer trying to teach a computer to translate, Lane Greene takes...