->''"Our lives are frittered away by detail. Simplicity, simplicity."''

Henry David Thoreau[[note]]Pronounced "THU-row" (like "thorough"), though [[NoPronunciationGuide most modern people pronounce it "thu-ROW."]][[/note]] was an American writer, philosopher, transcendentalist, NatureLover, and ecologist. His work on environmental history and ecology formed much of the early framework for modern environmentalism. A lifelong resident of Concord, Massachusetts, he spent two years at Walden Pond in a cabin he built for himself as an experiment in simple living, and refused to pay taxes as a protest against the UsefulNotes/MexicanAmericanWar, which he viewed as an attempt to add more slave states to the Union. In the process, he coined the term "Civil Disobedience".

Due to his huge influence on both modern-day ecology and how people view their government, nearly all sides of the political spectrum would like to claim Thoreau as one of their own. Take caution when someone tries to tell you what Thoreau "probably" would have believed if he were alive (and in some cases, what he ''did'' when he ''was'' alive).

He was a friend of Creator/RalphWaldoEmerson, who helped Thoreau shape his beliefs.

!!His most famous works include:
* ''Walden'', a reflection on simple living in natural surroundings. The book's influence on environmentalism can not be overestimated.
* ''Civil Disobedience'', an essay on... well, [[ExactlyWhatItSaysOnTheTin you know]]. A huge influence on UsefulNotes/MahatmaGandhi, [[CivilRightsMovement Martin Luther King, Jr.]], and Creator/LeoTolstoy, among many others.