On July 4th 1845, David Henry Thoreau went to live in a small cabin near the shore of Walden Pond, in Massachussetts. He stayed there alone for two years, and wrote about his experiences in the book that became Walden. John Kaag, an expert on American Philosophy, author of American Philosophy: A Love Story, discusses Thoreau and Walden with Nigel Warburton in this episode of the Philosophy Sites podcast.