Henry David Thoreau (12 July 1817 - 6 May 1862) was an American author, poet, philosopher, polymath, abolitionist, naturalist, tax resister, development critic, surveyor, historian and leading transcendentalist. He is best known for his book Walden, a reflection upon simple living in natural surroundings, and his essay Resistance to Civil Government (also known as Civil Disobedience), an argument for disobedience to an unjust state.
Thoreau's books, articles, essays, journals, and poetry total over 20 volumes. Among his lasting contributions are his writings on natural history and philosophy, where he anticipated the methods and findings of ecology and environmental history, two sources of modern-day environmentalism. His literary style interweaves close natural observation, personal experience, pointed rhetoric, symbolic meanings and historical lore, while displaying a poetic sensibility, philosophical austerity and "Yankee" love of practical detail. He was also deeply interested in the idea of survival in the face of hostile elements, historical change and natural decay; at the same time he advocated abandoning waste and illusion in order to discover life's true essential needs.
He was a lifelong abolitionist, delivering lectures that attacked the Fugitive Slave Law while praising the writings of Wendell Phillips and defending abolitionist John Brown. Thoreau's philosophy of civil disobedience later influenced the political thoughts and actions of such notable figures as Leo Tolstoy, Mohandas Gandhi and Martin Luther King, Jr.
Thoreau is sometimes cited as an anarchist. Though Civil Disobedience seems to call for improving rather than abolishing government — "I ask for, not at once no government, but at once a better government" — the direction of this improvement points toward anarchism: "'That government is best which governs not at all'; and when men are prepared for it, that will be the kind of government which they will have".
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