Book excerpt: "[The author] traces the full arc of Thoreau’s life, from his early days in the intellectual hothouse of Concord, when the American experiment still felt fresh and precarious, and 'America was a family affair, earned by one generation and about to pass to the next.' By the time he died in 1862, at only forty-four years of age, Thoreau had witnessed the transformation of his world from a community of farmers and artisans into a bustling, interconnected commercial nation. What did that portend for the contemplative individual and abundant, wild nature that Thoreau celebrated? Drawing on Thoreau’s copious writings, published and unpublished, [the author] presents a Thoreau vigorously alive in all his quirks and contradictions: the young man shattered by the sudden death of his brother; the ambitious Harvard College student; the ecstatic visionary who closed Walden with an account of the regenerative power of the Cosmos. We meet the man whose belief in human freedom and the value of labor made him an uncompromising abolitionist; the solitary walker who found society in nature, but also found his own nature in the society of which he was a deeply interwoven part. And, running through it all, Thoreau the passionate naturalist, who, long before the age of environmentalism, saw tragedy for future generations in the human heedlessness around him."--