Thousands of Americans have bought Doris Kearns Goodwin's 2005 book, "Team of Rivals: The Political Genius of Abraham Lincoln ," after hearing that it shaped President-elect Barack Obama's thinking. "Rivals," which examines how Lincoln put three of his opponents in the 1860 election in his Cabinet, was No. 14 on Amazon.com's bestseller list the Friday before Thanksgiving , no small feat for three-year-old nonfiction. (Obama's "Audacity of Hope" and "Dreams From My Father" were No. 10 and 11 on that list, respectively.) Goodwin spoke by phone with McClatchy recently about her take on Obama and the lessons Lincoln offers him:...