Walden; or, Life in the Woods by Henry David Thoreau is one of the more famous transcendentalist tracts in modern American literature. First published in 1854, Walden is an account of Thoreau's famous experiment in solitude: spending over two years alone in a cabin near the wilderness.

Walden is broken into sections that meditate on single themes: economy, reading, sounds, solitude, visitors, and so on. The style is complex, weaving back and forth between simple, home-spun prose and complex allegory, metaphor, and allusion. This makes Walden an interesting read because while it may seem accessible on the surface, it's a book that requires deep and repeated reading to fully appreciate its many complexities.