Henry David Thoreau (born David Henry Thoreau; July 12, 1817 – May 6, 1862) was an American naturalist, essayist, poet, and philosopher. A leading transcendentalist, he 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 in favor of citizen disobedience against an unjust state.
Thoreau's books, journals, and poetry amount to more than 20 volumes. Among his lasting contributions are his writings on natural history and philosophy, in which he anticipated the methods and findings of ecology and environmental history, two sources of modern-day environmentalism. His literary style interweaves close observation of nature, personal experience, pointed rhetoric, symbolic meanings, and historical lore, while displaying a poetic sensibility, philosophical austerity, and attention to 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 to discover life's true essential needs.
Thoreau was a lifelong abolitionist, delivering lectures that attacked the fugitive slave law while praising the writings of Wendell Phillips and defending the abolitionist John Brown. Thoreau's philosophy of civil disobedience later influenced the political thoughts and actions of notable figures such as Leo Tolstoy, Mahatma Gandhi, and Martin Luther King Jr.
Sometimes, Thoreau is retrospectively referred to as an anarchist, but he may be more properly regarded as a proto-anarchist.
Amos Bronson Alcott (who wrote in 1860 that "He is rightly named Thorough") and Thoreau's aunt each wrote that "Thoreau" is pronounced like the word thorough, pronounced as THURR-oh in General American, but more precisely as THAWR-oh in 19th century New England.
In 1918, Edward Waldo Emerson wrote: "We always called my friend Thórow, the h sounded, and accent on the first syllable."
In the early 20th century, a resurgence in foreign interest in Thoreau's work caused people to assume that the name was of foreign origin, leading modern-day American English speakers to commonly (mis)pronounce the name thə-ROH, with the stress on the second syllable.
Thoreau had a distinctive appearance, with a nose that he called his "most prominent feature". Of his appearance and disposition, Ellery Channing wrote:
His face, once seen, could not be forgotten. The features were quite marked: the nose aquiline or very Roman, like one of the portraits of Caesar (more like a beak, as was said); large overhanging brows above the deepest set blue eyes that could be seen, in certain lights, and in others gray,—eyes expressive of all shades of feeling, but never weak or near-sighted; the forehead not unusually broad or high, full of concentrated energy and purpose; the mouth with prominent lips, pursed up with meaning and thought when silent, and giving out when open with the most varied and unusual instructive sayings.
Early life and education, 1817–1837
Henry David Thoreau was born David Henry Thoreau in Concord, Massachusetts, into the "modest New England family" of John Thoreau, a pencil maker, and Cynthia Dunbar. His father was of French Protestant descent. His paternal grandfather had been born on the UK crown dependency island of Jersey. His maternal Scottish-American grandfather, Asa Dunbar, led Harvard's 1766 student "Butter rebellion", the first recorded student protest in the American colonies. David Henry was named after his recently deceased paternal uncle, David Thoreau. He began to call himself Henry David after he finished college; he never petitioned to make a legal name change.
He had two older siblings, Helen and John Jr., and a younger sister, Sophia Thoreau. None of the children married. Helen (1812–1849) died at age 37, from tuberculosis. John Jr. (1814–1842) died at age 27, of tetanus after cutting himself while shaving. Henry David (1817–1862) died at age 44, of tuberculosis. Sophia (1819–1876) survived him by 14 years, dying at age 56, of tuberculosis.
He studied at Harvard College between 1833 and 1837. He lived in Hollis Hall and took courses in rhetoric, classics, philosophy, mathematics, and science. He was a member of the Institute of 1770 (now the Hasty Pudding Club). According to legend, Thoreau refused to pay the five-dollar fee (approximately equivalent to $161 in 2025) for a Harvard master's diploma, which he described thus: Harvard College offered it to graduates "who proved their physical worth by being alive three years after graduating, and their saving, earning, or inheriting quality or condition by having Five Dollars to give the college". He commented, "Let every sheep keep its own skin", a reference to the tradition of using sheepskin vellum for diplomas.
Thoreau's birthplace still exists on Virginia Road in Concord. The house has been restored by the Thoreau Farm Trust, a nonprofit organization, and is now open to the public.
The traditional professions open to college graduates—law, the church, business, medicine—did not interest Thoreau, so in 1835 he took a leave of absence from Harvard, during which he taught at a school in Canton, Massachusetts, living for two years at an earlier version of today's Colonial Inn in Concord. His grandfather owned the earliest of the three buildings that were later combined. After he graduated in 1837, Thoreau joined the faculty of the Concord public school, but he resigned after a few weeks rather than administer corporal punishment. He and his brother John then opened the Concord Academy, a grammar school in Concord, in 1838. They introduced several progressive concepts, including nature walks and visits to local shops and businesses. The school closed when John became fatally ill from tetanus in 1842 after cutting himself while shaving. He died in Henry's arms.
Upon graduation Thoreau returned home to Concord, where he met Ralph Waldo Emerson through a mutual friend. Emerson, who was 14 years his senior, took a paternal and at times patron-like interest in Thoreau, advising the young man and introducing him to a circle of local writers and thinkers, including Ellery Channing, Margaret Fuller, Bronson Alcott, and Nathaniel Hawthorne and his son Julian Hawthorne, who was a boy at the time.
Emerson urged Thoreau to contribute essays and poems to a quarterly periodical, The Dial, and lobbied the editor, Margaret Fuller, to publish those writings. Thoreau's first essay published in The Dial was "Aulus Persius Flaccus", an essay on the Roman poet and satirist, in July 1840. It consisted of revised passages from his journal, which he had begun keeping at Emerson's suggestion. The first journal entry, on October 22, 1837, reads, "'What are you doing now?' he asked. 'Do you keep a journal?' So I make my first entry to-day."
Thoreau was a philosopher of nature and its relation to the human condition. In his early years he followed transcendentalism, a loose and eclectic idealist philosophy advocated by Emerson, Fuller, and Alcott. They held that an ideal spiritual state transcends, or goes beyond, the physical and empirical, and that one achieves that insight via personal intuition rather than religious doctrine. In their view, Nature is the outward sign of inward spirit, expressing the "radical correspondence of visible things and human thoughts", as Emerson wrote in Nature (1836).