Jill Lepore is an award-winning history professor at Harvard University and a staff writer at "The New Yorker." In her new book, "These Truths: A History of the United States" (September 2018), Lepore offers a magisterial account of the origins and rise of a divided nation. "These Truths: A History of the United States" argues that the American experiment rests on three ideas—“these truths,” Jefferson called them—political equality, natural rights, and the sovereignty of the people. And it rests, too, writes Lepore, on a fearless dedication to inquiry. "These Truths" tells the story of America, beginning in 1492, to ask whether the course of events has proven the nation’s founding truths, or belied them.