Henry David Thoreau （1817-1862）， the author of Walden, was born in Concord, Massachusetts. When he was a child, he always went to the woods and field with his old brother. So he loves the nature very much. In the middle of 19th century, American economies developed so rapidly that most people pursuit the material life and ignore the spiritual life. But Thoreau wants to live a simple life. Also for the Transcendentalist Movement was centered in Concord and Emerson had a great influence on him. All these made Thoreau go to build a cabin on the shore of Walden Pond and live alone to close to the nature in 1845. Later, he wrote the famous book, Walden, which mainly talks about his life and thoughts during he lived alone in the woods near Walden Pond.
　　
　　When Walden was published in 1854, it was not well accepted by people. Instead it was regarded as "wicked and heathenish" .It was published only one time until Thoreau died of disease. But many years later especially in twentieth c