On the Duty of Civil Disobedience is Thoreau's most important political essays. It was first published in 1849. In the article, Thoreau argued that people should not be allowed to shrink their conscience or the government, and people have the obligation to avoid such acquiescence, prevent the government to turn them into the injustice actors.

Henry David Soro (Henry David, Thoreau, 1817-1862), was an American writer, philosopher, Transcendentalism representative, also an abolitionist and naturalist, hasanarchictendencies. Thoreau was famous for the natural ecology, protectionism ideas and natural history studies.