Restless Fires provides a detailed rendering of John Muir's thousand-mile walk to the Gulf based on both manuscript and published accounts. The author's key focus is an examination of the development of Muir's environmental thought as a young adult. Muir experienced delight in seeing nature anew after recovering from partial blindness due to a factory accident. He witnessed the Civil War's devastating impacts and efforts towards Reconstruction on towns, villages and people. This is one of the first books on John Muir's thousand-mile walk that places his journey in the context of the Civil War and Reconstruction, to which Muir gave only passing witness. Through these experiences and reflections, Muir came to radical views regarding humankind's relationship to nature, death and faith. Muir suffered hunger, felt pangs of loneliness, slept five days in a cemetery, slogged through swamps, and nearly died of malaria. The legacy of this walk is found in Muir's perceptive insights generated in part by his background and reading, and by his experience with the Southern environment and its people and plants during the walk. His journal gives evidence of a young man resolving what he wants to do with his life. Muir comes to profound insights as to how human beings fit into nature. In Muir's view a walk in nature gave humans a sense of their limits, a lesson in humility. In Muir's view, nature provides humans a moral touchstone when they recognize their small part in the "divine harmony." Muir wrote that when he simply went out for a walk in nature, he was really "going in." This book explores what Muir meant by "going in."