Henry David Thoreau was an American writer, philosopher, abolitionist, naturalist, essayist, and poet. A leading transcendentalist, he believed in social equality, spiritual self-improvement, closeness to nature and freedom from material interests. “On the Duty of Civil Disobedience’ is an essay that was first published in 1849. In it the author expresses his anti slavery and anti war sentiments, that will influence later nonviolent resistance movements worldwide. Many authors and poets including Leo Tolstoy, Willa Cather, and William Butler Yeats have sung his praises and believed that, "The country knows not yet, or in the least part, how great a son it has lost." While other writers from his time have faded into obscurity, Thoreau has endured because so much of what he wrote about is still relevant today. Enjoy the reading.