Anna Quindlen has been telling us what we’re thinking,  or maybe how we’re thinking, for decades. First as a columnist for Newsweek and the New York Times and now as a novelist. She talks with Steve Bertrand on Books about her latest novel, “Miller’s Valley,” with stops along the way about what it means to be home, keeping current in the fast-moving world of the internet, and, of course, the ubiquitous campaign for president.