After reading publicity interviews for this brand new biography of Henry David Thoreau, I anticipated that this book would deliver on the promise of its title -- and I expected "great things" of it. The author stuck me as someone with a sensitive understanding of the subtle nuances and complexities of Thoreau's various aspects, and that he would, perhaps, succeed in presenting a definitive Thoreau for the 21st century. (Afterall, it has been some decades since a major biography of the subject was published). However, this book was very different from what I expected. Much less than a life, Dann's work seeks more to understand Thoreau as a mystic. I was disappointed that in so doing, the work lacks a critical balance of Thoreau's other aspects, as well as a critical grounding in Thoreau's biography. The jacket cover, describes this book as a "sweeping, epic biography." Sweeping it is, indeed. The work begins well, with an introduction to the subject's mother in the home where Thoreau was born, but then the narrative takes off and readers are never given substantive details about Thoreau's life, it rather jumps and meanders through various episodic incidents and themes that revolve around mysticism. The overall result, is one of fragmented parts rather than a cohesive "life," or understanding of who Thoreau was as a person -- or even, why we ought to care in the first place. The reader is never properly introduced to the subject, to Thoreau's nuclear family, where he lived, or the trajectory of his life. You find out here at there that he had a father, and siblings, that he was a surveyor, etc, But its all very disjointed and haphazardly mentioned in hindsight of some other topic. Its also assumed that the reader registers the relationships to and importance of the various celebrity friends and acquaintances that were significant to Thoreau's life, as they are referenced hither and thither. This work assumes a lot of biographical and contextual knowledge on the part of the reader. It would, perhaps, have succeed much better as an academic series of essays exploring contexts of Thoreau's mysticism than as a biography. Furthermore, at times, the author gets carried away in his enthusiasm for Thoreau's mysticism, which compromises the integrity of his analysis. This is not to say that the work is without its valuable, nuanced insights; I rather enjoyed several observations. For instance, it was quite good at relating aspects of Thoreau's philosophy and experience to broader historical currents and events. However, it could very well do with some better grounding in the substance of Thoreau's biography. There were also some notably factually incorrect slights to Thoreau's contemporaries and unsound argumentative foundations that gave me pause in considering the interpretations of Thoreau presented herein. My concluding sense is that this work was rushed to publication to be the first of several new biographies being issued to mark Thoreau's bicentennial year. If so, it was a tremendous disservice to the work. I really wanted to rate it higher, but it was missing too much; regrettably, 2.5.