Robert C. Pollock's The Mind of Pius XII is a compilation of the thoughts and writings of Pope Pius XII from 1939 to 1954, arranged into a thematic dictionary, covering topics such as personal growth, the modern state, democracy, science, technology, medicine, and peace, to provide a comprehensive picture of his world view. The book is not a narrative, but rather a systematically categorized collection of quotations from various papal communications. Its purpose is to present Pope Pius XII's views on contemporary world issues in a structured manner, making it a reference source for those seeking to understand the Pope's thought.