The book is written by American famous writer Thoreau, which is regarded as the most popular non-fictional work. The book has more than 200 versions so far and countless translations in different languages. Thoreau advocates returning to nature and having simple life. He writes down his solitary life in a wooden house along Walden. He describes pastoral life and attractive scenery in nature, and also explains his philosophy thought. The book can remind people of their remote memory about life and other things and emotions, and also can change their attitudes towards life, and purify hearts and distillate spirits. Library of Congress ever listed the book as one of 25 classics for building readers life.
