'When I wrote the following pages, or rather the bulk of them, I lived alone, in the woods, a mile from any neighbor, in a house which I had built myself, on the shore of Walden Pond...' Henry David Thoreau (1817-1862) was a leading figure in the American Transcendentalist movement and the era of U. S. literary emergence, an intellectual with worldwide influence as essayist, social thinker, naturalist-environmentalist, and sage. Thoreau's Walden, an autobiographical narrative of his two-year sojourn in a self-built lakeside cabin, is one of the most widely studied works of American literature. It has generated scores of literary imitations and thousands of neo-Walden experiments in back-to-basics living, both rural and urban. Thoreau's great essay, 'Civil Disobedience,' is a classic of American political activism and a model for nonviolent reform movements around the world. Thoreau also stands as an icon of modern American environmentalism, the father of American nature writing, a