Henry David Thoreau 
Walden 

This is a book of peace, serenity and wisdom. The analysis of life, criticism of customs, amazing language, flashing word, unique insights are all included in this book. The author described lots of beautiful scenery, like clean water and green forest. There are also some thorough and incisive ideas in this book that can give people enlightenment.This is a fresh, healthy and inspiring book. It has a touching description of spring and dawn. There is clear air from nature, and there is no environmental pollution from industrial society. Reading it, readers will naturally feel the purity of their hearts and the sublimation of their spirits.