evidence: Henry David Thoreau (July 12, 1817 – May 6, 1862) was an American naturalist, essayist, poet, and philosopher.[2] A leading transcendentalist,[3] 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, Henry David (2007). I to Myself: An Annotated Selection from the Journal of Henry D. Thoreau. Jeffrey S. Cramer, ed. New Haven: Yale University Press. p. 1. [...] - ^ Thoreau, Henry David (January 1, 1865). Letters to various persons. Boston : Ticknor and Fields – via Internet Archive.