This book reveals the origins of the American religious marketplace by examining the life and work of reformer and journalist Orestes Brownson (1803-1876). Grounded in a wide variety of sources, including personal correspondence, journalistic essays, book reviews, and speeches, this work argues that religious sectarianism profoundly shaped participants in the religious marketplace. Brownson is emblematic of this dynamic because he changed his religious identity seven times over a quarter of a century. Throughout, Brownson waged a war of words opposing religious sectarianism. By the 1840s, however, a corrosive intellectual environment transformed Brownson into an arch religious sectarian. The book ends with a consideration of several explanations for Brownson’s religious mobility, emphasizing the goad of sectarianism as the most salient catalyst for change.

Orestes Brownson (1803-1876) is known as the foremost American Catholic lay apologist of the nineteenth century. However, before his conversion to Catholicism in 1844, Brownson labored for nearly twenty years as a Protestant, publishing prodigiously and debating frequently with leading luminaries of his day, including William Ellery Channing and Ralph Waldo Emerson. Using little known and underutilized primary sources, this book traces Brownson's theological development as a Protestant against the backdrop of the post-Enlightenment problem of establishing the grounds for the possibility of divine revelation. As such, it offers an excellent vantage point into the antebellum American intellectual context while allowing Brownson's Protestant thought to stand on its own as an original and enterprising intellectual response to the religious problems of the day.