<a href="https://en.wikipedia.org/wiki/Henry_David_Thoreau" id="mw0Q" rel="mw:WikiLink" title="Henry David Thoreau">Henry David Thoreau</a> moves into a small cabin on <a href="https://en.wikipedia.org/wiki/Walden_Pond" id="mw0g" rel="mw:WikiLink" title="Walden Pond">Walden Pond</a> in Concord, Massachusetts. Thoreau's account of his two years there, <i id="mw0w"><a href="https://en.wikipedia.org/wiki/Walden" id="mw1A" rel="mw:WikiLink" title="Walden">Walden</a></i>, will become a touchstone of the environmental movement.