3. 1  the theory that the universe has been ruled from its origins by two conflicting powers, one good and one evil, both existing as equally ultimate first causes. 2  the theory that there are two personalities, one human and one divine, in Christ.
Henry David Thoreau , ( born July 12 , 1817 , Concord , Massachusetts , U.S. âdied May 6 , 1862 , Concord ) American essayist , poet , and practical philosopher , renowned for having lived the doctrines of Transcendentalism as recorded in his masterwork , Walden ( 1854 ) , and for having been a vigorous advocate of civil liberties , as evidenced in ...
Thoreau and the Transcendentalist movement in New England grew up together. Thoreau was nineteen years old when Emerson published Nature, an essay that articulates the philosophical underpinnings of the movement.