"I was taking with me the manuscript of my History of Western Philosophy, and the unfortunate censors had to read every word of it lest it should contain information useful to the enemy. They were, however, at last satisfied that a knowledge of philosophy could be of no use to the Germans, and very politely assured me that they had enjoyed reading my book, which I confess I found hard to believe."
January 1, 1970
https://en.wikiquote.org/wiki/The_Autobiography_of_Bertrand_Russell