Final answer:
Henry David Thoreau did not seek to establish a Utopian community in Pennsylvania. His engagement with Utopian ideals was through his personal experiment in simple living at Walden Pond.
Step-by-step explanation:
The author who wanted to start a Utopian settlement in Pennsylvania was not Henry David Thoreau. While Thoreau is often associated with Utopian ideals through his explorations of living in harmony with nature and his critique of government in works like 'Civil Disobedience' and 'Walden; or, Life in the Woods,' he did not seek to establish a Utopian community.
During the nineteenth century, more than a hundred Utopian communities were indeed established in the United States, often influenced by transcendentalist views on individualism and self-reliance, as seen in Thoreau's and Emerson's writings. However, Thoreau's engagement was more of a personal experiment in simple living and self-sufficiency at Walden Pond, rather than the creation of a communal Utopian project in Pennsylvania or elsewhere.