Cornwall's book is a tremendous research effort and highly readable. He starts out trying to disprove accusations that Pope Pius XII stopped his church from protesting Nazi atrocities. But the research leads to a far more painful truth. For any who promote the separation of government from religious values, this book poses hard questions. The Church's agreements with fascist rulers involved a trade: government support for religious institutions, in exchange for church silence on political affairs. As the 1933 Concordat with Nazi Germany said,
"In consideration of the guarantees afforded by the conditions of this treaty, and of legislation protecting the rights and freedom of the Catholic Church in the Reich ..., the Holy See will ensure a ban on all clergy and members of religious congregations from political party activity."
Cornwall explores the unfolding implications of this split between loyalties. As Hitler later said, "When they attempt by any other means -- writings, encyclicals, etc. -- to assume rights which belong only to the state, we will push them back into their proper spiritual activity." And as Pope Pius XII would later explain, the Church must avoid "being compromised in defense of Christian principles and humanity by being drawn into purely man-made politics ... the Church is only interested in upholding her legacy of Truth. ... The purely worldly problems, in which the Jewish people may see themselves involved, are of no interest to her."
Cornwall is the best kind of scholar, driven by a personal and spiritual need to understand the truth. The questions he pursues are directly relevant today, for Christians, Muslims, or anyone. To what extent has the goal of protecting religion from the world served to protect governments from moral opposition? What have we learned about the role and aim of religion in the world?