In 1837, Emerson befriended Henry David Thoreau. Though they had likely met as early as 1835, in the fall of 1837, Emerson asked Thoreau, "Do you keep a journal?" The question went on to be a lifelong inspiration for Thoreau.Buell, p. 121. Emerson's own journal was published in 16 large volumes, in the definitive Harvard University Press edition issued between 1960 and 1982. Some scholars consider the journal to be Emerson's key literary work.Rosenwald
