What is the author's style in Walden by Henry David Thoreau?

Thoreau structured the book to suit his dual purposes of explaining how he lived and of urging readers to apply his experiences to their own lives. He compressed twenty-six months into one year for his narrative, beginning and ending in spring, the season of rebirth. Within the general structure of a one-year span, Thoreau organized his material by topic, rather than strictly chronologically. For example, the chapter "The Village" comes during the "summer" season of the book, but not every incident related in it actually took place during summer.