Johann Joseph Ignaz von Döllinger said of the work on Luther: "Audin's work is written with an extraordinary and at times almost naive ignorance of Luther's writings and contemporary literature, and of the general condition of Germany at that period" (Kirchenlexikon, s.v.
The quote from Johann Joseph Ignaz von Döllinger criticizes Audin's approach to Luther's work, suggesting a lack of depth and awareness of both Luther's writings and the historical context of 16th-century Germany. (Kirchenlexikon, s.v.)