Henry David Thoreau (see name pronunciation; July 12, 1817 – May 6, 1862) was an American essayist, poet, philosopher, abolitionist, naturalist, tax resister, development critic, surveyor, and historian. A leading transcendentalist, Thoreau is best known for his book Walden, a reflection upon simple living in natural surroundings, and his essay "Civil Disobedience" (originally published as "Resistance to Civil Government"), an argument for disobedience to an unjust state.
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Poetry is the language in which man explores his own amazement . . . says heaven and earth in one word . . . speaks of himself and his predicament as though for the first time. It has the virtue of being able to say twice as much as prose in half the time, and the drawback, if you do not give it your full attention, of seeming to say half as much in twice the time.