As the first nation to be founded on a set of ideas, America has achieved a level of growth and success over the past two and a half centuries that is unprecedented in human history. From the very beginning, our Founding Fathers' tireless efforts to lay the foundation for this immense prosperity were driven by an intensely passionate and highly productive debate over how we could, both individually and as a nation, improve the world around us, confront our challenges most effectively and provide a better life for our children and future generations. Over the past two and a half decades,...