Henry David Thoreau, at twenty-seven, built a tiny, one-room cabin in the woods -- on land owned by his friend, Ralph Waldo Emerson--and began his two-year experiment in frugality on the shore of Walden Pond. This book is his account of his time spent there. And yet it is so much more. First published in 1854, these essays on politics, philosophy, humanity, and the natural world are at once deeply personal and strikingly universal.