Johann Adam Möhler was twenty-nine years old and a lecturer at the Catholic seminary in Tübingen when he wrote Die Einheit in der Kirche ( Unity in the Church) in 1825. Its two German editions and French translations influenced Catholic authors well into the twentieth century, and the book remains an important example of the early-nineteenth-century Catholic Awakening.
In Unity in the Church, Möhler upholds a romantic view of the Catholic Church by describing it as the organic development of the life-giving Holy Spirit. This, he insisted, was the teaching of the earliest Christian writers, whom he discusses and quotes at length throughout the book. Although Möhler was primarily writing as an apologist for the Catholic faith against Protestantism, his work is marked by careful study of Protestant sources, respect for Protestant thought and thinkers, and a reconciliatory tone.
In this book he uses the works of the church fathers to demonstrate to his contemporary...