Born in 1817, Henry David Thoreau was an American writer, poet, philosopher, who influenced many great men of the 20th century. Author of the essay Civil Disobedience (1849), he claims that every citizen has the duty to disobey the rules of an unfair government, even in democratic countries, on account that vote is not enough to show discontent. This idea was brought to life by Gandhi in his fight against the English rule and the caste system, and by Martin Luther King in the Civil Rights Movement. Thoreau is also the author of Walden (1854), where he asserts that it is necessary for man to immerse himself in nature to better understand society, since introspection and solitude give a precious insight. He tried it himself, but his “cabin in the woods” was actually very close to a town. However, Christopher McCandless, a.k.a. Alexander Supertramp, tried it for real, but met a terrible fate.