"This book records the actions and behaviors of Christianity, beyond all institutional and religious barriers. I write the history of the constant connection between so-called secular and ecclesiastical politics, along with the impacts of this religion on the people:
on criminality in foreign policy, agricultural, commercial, and economic policy, in educational policy, in culture, in censorship, in the continuing spread of ignorance and superstition, on the ruthless exploitation of sexual morality, marital and criminal law.
I write about the criminality of the clergy, as it has manifested over the centuries with private enrichment, the bargaining of positions, the worship of miracles and relics, various forms of falsification, etc.
In short: I write the history of a crime throughout the entire extent of the state, ecclesiastical, and social life of Christendom." (Karlheinz Deschner)