Historian Allen Guelzo joins us to discuss his new book, "Our Ancient Faith: Lincoln, Democracy, and The American Experiment." His book discusses the crisis of democracy in the middle of the 19th century - a time not unlike our current crisis of faith in democracy. We discuss Abraham Lincoln's political philosophy, built upon the Declaration of Independence, his Whig party views and how he marshaled those beliefs to hold American democracy together. Guelzo argues that Lincoln is someone we can look to for inspiration and illumination about our nation's character. For more, see: Our Ancient Faith by Allen C. Guelzo: 9780593534441 | PenguinRandomHouse.com: Books