Walden

Walden, an American classic, details the experiences of Henry David Thoreau while he lived at Walden Pond near Concord, Massachusetts. Thoreau, a transcendentalist author and poet, writes extensively of reflections on his natural surroundings, as well as his values and experiences of independence, self-reliance, and relation to nature and society.
On the Duty of Civil Disobedience is a powerful essay by Thoreau arguing the case for each person's duty to follow their individual conscience and reject thoughtless acceptance of governmental and social injustices.