Anthony Rhodes was a novelist, travel writer, biographer and memoirist and convert to Roman Catholicism. In one of his books ("The Vatican in the Age of the Dictators") he wrote of the encyclical "Nor was the Führer himself spared, for his 'aspirations to divinity', 'placing himself on the same level as Christ'; 'a mad prophet possessed of repulsive arrogance". This has subsequently been cited in works which repeat Rhodes saying that Hitler is described as a "mad prophet" in the encyclical.