In 1844, a 28-year-old Harvard graduate decided to spend two years in the woods, on the edge of a pond called Walden, in the heart of Massachusetts, with Homer and the Bhagavad Gita in his luggage. He built a cabin, walked, smelled, contemplated, meditated, immersed himself body and soul in the "wild" life and enjoyed a sober but joyful existence, far from society, urbanization and rapid industrialization. This young disciple and friend of Ralph Waldo Emerson, budding yogi and forerunner of the environmentalist cause and civil disobedience, was Henry David Thoreau. We know Thoreau as a philosopher of the forest, but what do we know of Thoreau as a yogi of the forest? How does Thoreau's philosophy allow us to think together and thus link the living world of which we are a part with yoga and meditation? In what ways does Thoreau allow us to experience and think a new relationship with the world and with ourselves? What if Thoreau were a precursor of eco-spirituality? Thanks to Emilie Poggi's superb original illustrations and Colette Poggi's powerful and poetic language, we are transported to Walden, between the philosophical walk and wild meditation, and the influences of Indian philosophy.