As the most comprehensive study of Thoreau's spirituality from a Christian perspective, The Spiritual Journal of Henry David Thoreau is the first to seriously examine connections between Thoreau's religious practices and those of his Protestant forebears. While a few writers have considered the relation between Thoreau's thought and Christian doctrine, this book instead outlines the links between Thoreau's religious practices (such as keeping a spiritual journal, studying nature, and walking) and those of earlier New England Protestants. It is also one of the first books to treat spiritual journals as a distinct literary genre.